./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/systemc/token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire --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 32bit --witnessprinter.graph.data.programhash 44ef362a593e25f5681bc4a034b065cd86559bd3dd750386bca2a1f270891ccd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:29:27,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:29:27,853 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 21:29:27,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:29:27,873 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:29:27,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:29:27,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:29:27,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:29:27,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:29:27,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:29:27,918 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:29:27,918 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:29:27,919 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:29:27,919 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:29:27,920 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:29:27,921 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:29:27,921 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:29:27,922 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:29:27,923 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:29:27,923 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:29:27,924 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:29:27,925 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:29:27,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:29:27,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:29:27,927 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:29:27,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:29:27,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:29:27,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:29:27,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:29:27,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:29:27,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:29:27,930 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:29:27,931 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:29:27,932 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:29:27,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:29:27,933 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:29:27,933 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:29:27,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:29:27,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:29:27,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:27,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:29:27,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:29:27,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:29:27,937 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:29:27,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:29:27,938 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:29:27,939 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:29:27,939 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:29:27,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:29:27,940 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_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44ef362a593e25f5681bc4a034b065cd86559bd3dd750386bca2a1f270891ccd [2023-11-23 21:29:28,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:29:28,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:29:28,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:29:28,290 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:29:28,291 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:29:28,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/systemc/token_ring.02.cil-1.c [2023-11-23 21:29:31,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:29:31,616 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:29:31,617 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/sv-benchmarks/c/systemc/token_ring.02.cil-1.c [2023-11-23 21:29:31,629 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/data/47b743cf2/befa28033e2d43c5b03522fbf6c04ad8/FLAG2ba3e68ed [2023-11-23 21:29:31,644 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/data/47b743cf2/befa28033e2d43c5b03522fbf6c04ad8 [2023-11-23 21:29:31,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:29:31,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:29:31,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:31,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:29:31,659 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:29:31,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a459d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31, skipping insertion in model container [2023-11-23 21:29:31,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,702 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:29:31,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:31,926 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:29:31,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:31,997 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:29:31,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31 WrapperNode [2023-11-23 21:29:31,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:31,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:31,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:29:31,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:29:32,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:32,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:32,052 INFO L138 Inliner]: procedures = 32, calls = 38, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 286 [2023-11-23 21:29:32,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:32,057 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:29:32,057 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:29:32,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:29:32,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:32,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:32,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:32,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:32,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:32,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:32,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:32,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:32,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:29:32,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:29:32,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:29:32,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:29:32,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:32,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:32,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:32,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:29:32,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:29:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:29:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-23 21:29:32,187 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-23 21:29:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-23 21:29:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-23 21:29:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-23 21:29:32,190 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-23 21:29:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-23 21:29:32,191 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-23 21:29:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-23 21:29:32,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-23 21:29:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:29:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-23 21:29:32,191 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-23 21:29:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:29:32,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:29:32,278 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:29:32,283 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:29:32,808 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:29:33,036 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:29:33,036 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 21:29:33,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:33 BoogieIcfgContainer [2023-11-23 21:29:33,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:29:33,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:29:33,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:29:33,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:29:33,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:29:31" (1/3) ... [2023-11-23 21:29:33,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e67b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:33, skipping insertion in model container [2023-11-23 21:29:33,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (2/3) ... [2023-11-23 21:29:33,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e67b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:33, skipping insertion in model container [2023-11-23 21:29:33,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:33" (3/3) ... [2023-11-23 21:29:33,054 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.02.cil-1.c [2023-11-23 21:29:33,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:29:33,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-23 21:29:33,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:29:33,141 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;@67ae88bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:29:33,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-23 21:29:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 68 states have internal predecessors, (91), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:29:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-23 21:29:33,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:33,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:33,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:33,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:33,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1275130521, now seen corresponding path program 1 times [2023-11-23 21:29:33,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:33,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551623032] [2023-11-23 21:29:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:33,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:33,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:33,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551623032] [2023-11-23 21:29:33,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551623032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:33,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:33,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:29:33,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543776059] [2023-11-23 21:29:33,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:33,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:29:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:33,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:29:33,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:29:33,650 INFO L87 Difference]: Start difference. First operand has 90 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 68 states have internal predecessors, (91), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:29:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:33,962 INFO L93 Difference]: Finished difference Result 252 states and 355 transitions. [2023-11-23 21:29:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:29:33,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2023-11-23 21:29:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:33,976 INFO L225 Difference]: With dead ends: 252 [2023-11-23 21:29:33,977 INFO L226 Difference]: Without dead ends: 163 [2023-11-23 21:29:33,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:29:33,986 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 201 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:33,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 302 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:29:34,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-23 21:29:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 158. [2023-11-23 21:29:34,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 112 states have (on average 1.3839285714285714) internal successors, (155), 119 states have internal predecessors, (155), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-23 21:29:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2023-11-23 21:29:34,070 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 35 [2023-11-23 21:29:34,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:34,070 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2023-11-23 21:29:34,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:29:34,072 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2023-11-23 21:29:34,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:29:34,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:34,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:34,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:29:34,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:34,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:34,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1183441161, now seen corresponding path program 1 times [2023-11-23 21:29:34,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:34,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996278913] [2023-11-23 21:29:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:34,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:34,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:34,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996278913] [2023-11-23 21:29:34,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996278913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:34,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:34,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:29:34,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71583334] [2023-11-23 21:29:34,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:34,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:29:34,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:29:34,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:29:34,252 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:29:34,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:34,692 INFO L93 Difference]: Finished difference Result 520 states and 693 transitions. [2023-11-23 21:29:34,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:29:34,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-11-23 21:29:34,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:34,698 INFO L225 Difference]: With dead ends: 520 [2023-11-23 21:29:34,698 INFO L226 Difference]: Without dead ends: 350 [2023-11-23 21:29:34,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:29:34,702 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 348 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:34,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 448 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:29:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-23 21:29:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 336. [2023-11-23 21:29:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 248 states have (on average 1.3629032258064515) internal successors, (338), 254 states have internal predecessors, (338), 54 states have call successors, (54), 26 states have call predecessors, (54), 28 states have return successors, (59), 56 states have call predecessors, (59), 54 states have call successors, (59) [2023-11-23 21:29:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 451 transitions. [2023-11-23 21:29:34,754 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 451 transitions. Word has length 36 [2023-11-23 21:29:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:34,755 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 451 transitions. [2023-11-23 21:29:34,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:29:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 451 transitions. [2023-11-23 21:29:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:29:34,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:34,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:34,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:29:34,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:34,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:34,758 INFO L85 PathProgramCache]: Analyzing trace with hash -522107370, now seen corresponding path program 1 times [2023-11-23 21:29:34,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:34,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682178612] [2023-11-23 21:29:34,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:34,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:35,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:35,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682178612] [2023-11-23 21:29:35,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682178612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:35,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:35,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:29:35,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380880699] [2023-11-23 21:29:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:35,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:29:35,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:35,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:29:35,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:29:35,035 INFO L87 Difference]: Start difference. First operand 336 states and 451 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:29:35,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:35,365 INFO L93 Difference]: Finished difference Result 902 states and 1208 transitions. [2023-11-23 21:29:35,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:29:35,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-11-23 21:29:35,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:35,380 INFO L225 Difference]: With dead ends: 902 [2023-11-23 21:29:35,380 INFO L226 Difference]: Without dead ends: 572 [2023-11-23 21:29:35,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:29:35,389 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 263 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:35,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 258 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:29:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-23 21:29:35,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 533. [2023-11-23 21:29:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 398 states have (on average 1.3467336683417086) internal successors, (536), 402 states have internal predecessors, (536), 81 states have call successors, (81), 44 states have call predecessors, (81), 48 states have return successors, (90), 87 states have call predecessors, (90), 81 states have call successors, (90) [2023-11-23 21:29:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 707 transitions. [2023-11-23 21:29:35,484 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 707 transitions. Word has length 36 [2023-11-23 21:29:35,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:35,484 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 707 transitions. [2023-11-23 21:29:35,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:29:35,485 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 707 transitions. [2023-11-23 21:29:35,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 21:29:35,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:35,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:35,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:29:35,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:35,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:35,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1926845334, now seen corresponding path program 1 times [2023-11-23 21:29:35,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:35,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422999639] [2023-11-23 21:29:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:35,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:35,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:35,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422999639] [2023-11-23 21:29:35,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422999639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:35,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:35,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:35,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230645465] [2023-11-23 21:29:35,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:35,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:35,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:35,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:35,574 INFO L87 Difference]: Start difference. First operand 533 states and 707 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 21:29:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:35,714 INFO L93 Difference]: Finished difference Result 1534 states and 2046 transitions. [2023-11-23 21:29:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:35,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 38 [2023-11-23 21:29:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:35,724 INFO L225 Difference]: With dead ends: 1534 [2023-11-23 21:29:35,725 INFO L226 Difference]: Without dead ends: 1006 [2023-11-23 21:29:35,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:35,739 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 87 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:35,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 186 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:29:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-11-23 21:29:35,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 990. [2023-11-23 21:29:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 742 states have (on average 1.3099730458221024) internal successors, (972), 746 states have internal predecessors, (972), 150 states have call successors, (150), 86 states have call predecessors, (150), 92 states have return successors, (164), 158 states have call predecessors, (164), 150 states have call successors, (164) [2023-11-23 21:29:35,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1286 transitions. [2023-11-23 21:29:35,856 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1286 transitions. Word has length 38 [2023-11-23 21:29:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:35,857 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1286 transitions. [2023-11-23 21:29:35,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 21:29:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1286 transitions. [2023-11-23 21:29:35,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 21:29:35,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:35,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:35,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:29:35,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:35,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:35,861 INFO L85 PathProgramCache]: Analyzing trace with hash -46743519, now seen corresponding path program 1 times [2023-11-23 21:29:35,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:35,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539554926] [2023-11-23 21:29:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:35,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:29:36,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:36,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539554926] [2023-11-23 21:29:36,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539554926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:36,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:36,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:29:36,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74546829] [2023-11-23 21:29:36,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:36,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:29:36,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:36,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:29:36,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:29:36,151 INFO L87 Difference]: Start difference. First operand 990 states and 1286 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-23 21:29:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:36,573 INFO L93 Difference]: Finished difference Result 2466 states and 3189 transitions. [2023-11-23 21:29:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:29:36,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 53 [2023-11-23 21:29:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:36,588 INFO L225 Difference]: With dead ends: 2466 [2023-11-23 21:29:36,588 INFO L226 Difference]: Without dead ends: 1482 [2023-11-23 21:29:36,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:29:36,592 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 248 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:36,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 304 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:29:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-11-23 21:29:36,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1432. [2023-11-23 21:29:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1077 states have (on average 1.2896935933147633) internal successors, (1389), 1083 states have internal predecessors, (1389), 215 states have call successors, (215), 128 states have call predecessors, (215), 134 states have return successors, (229), 221 states have call predecessors, (229), 215 states have call successors, (229) [2023-11-23 21:29:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1833 transitions. [2023-11-23 21:29:36,781 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1833 transitions. Word has length 53 [2023-11-23 21:29:36,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:36,782 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1833 transitions. [2023-11-23 21:29:36,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-23 21:29:36,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1833 transitions. [2023-11-23 21:29:36,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 21:29:36,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:36,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:36,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:29:36,786 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:36,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1770990003, now seen corresponding path program 1 times [2023-11-23 21:29:36,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:36,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045278136] [2023-11-23 21:29:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:36,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:29:36,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:36,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045278136] [2023-11-23 21:29:36,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045278136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:36,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:36,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:29:36,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110104785] [2023-11-23 21:29:36,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:36,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:29:36,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:29:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:29:36,995 INFO L87 Difference]: Start difference. First operand 1432 states and 1833 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-23 21:29:37,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:37,474 INFO L93 Difference]: Finished difference Result 3630 states and 4646 transitions. [2023-11-23 21:29:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:29:37,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 54 [2023-11-23 21:29:37,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:37,489 INFO L225 Difference]: With dead ends: 3630 [2023-11-23 21:29:37,489 INFO L226 Difference]: Without dead ends: 2204 [2023-11-23 21:29:37,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:29:37,494 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 255 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:37,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 258 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:29:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2023-11-23 21:29:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2080. [2023-11-23 21:29:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 1562 states have (on average 1.267605633802817) internal successors, (1980), 1569 states have internal predecessors, (1980), 314 states have call successors, (314), 190 states have call predecessors, (314), 198 states have return successors, (333), 321 states have call predecessors, (333), 314 states have call successors, (333) [2023-11-23 21:29:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2627 transitions. [2023-11-23 21:29:37,708 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2627 transitions. Word has length 54 [2023-11-23 21:29:37,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:37,709 INFO L495 AbstractCegarLoop]: Abstraction has 2080 states and 2627 transitions. [2023-11-23 21:29:37,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-23 21:29:37,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2627 transitions. [2023-11-23 21:29:37,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 21:29:37,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:37,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:37,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:29:37,711 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:37,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash 304829209, now seen corresponding path program 1 times [2023-11-23 21:29:37,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:37,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155675505] [2023-11-23 21:29:37,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:29:37,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:37,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155675505] [2023-11-23 21:29:37,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155675505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:37,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:37,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:37,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643810493] [2023-11-23 21:29:37,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:37,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:37,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:37,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:37,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:37,790 INFO L87 Difference]: Start difference. First operand 2080 states and 2627 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:29:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:38,042 INFO L93 Difference]: Finished difference Result 3900 states and 4972 transitions. [2023-11-23 21:29:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:38,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2023-11-23 21:29:38,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:38,059 INFO L225 Difference]: With dead ends: 3900 [2023-11-23 21:29:38,059 INFO L226 Difference]: Without dead ends: 2488 [2023-11-23 21:29:38,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:38,064 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 49 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:38,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 242 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:38,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2023-11-23 21:29:38,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2255. [2023-11-23 21:29:38,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1711 states have (on average 1.272355347749854) internal successors, (2177), 1718 states have internal predecessors, (2177), 327 states have call successors, (327), 203 states have call predecessors, (327), 211 states have return successors, (346), 334 states have call predecessors, (346), 327 states have call successors, (346) [2023-11-23 21:29:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2850 transitions. [2023-11-23 21:29:38,328 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2850 transitions. Word has length 55 [2023-11-23 21:29:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:38,329 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 2850 transitions. [2023-11-23 21:29:38,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:29:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2850 transitions. [2023-11-23 21:29:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 21:29:38,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:38,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:38,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:29:38,331 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:38,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:38,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1144371500, now seen corresponding path program 1 times [2023-11-23 21:29:38,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:38,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48222786] [2023-11-23 21:29:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:38,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:29:38,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:38,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48222786] [2023-11-23 21:29:38,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48222786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:29:38,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238370379] [2023-11-23 21:29:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:38,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:38,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:38,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:38,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:29:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:38,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:29:38,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:29:38,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:38,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238370379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:38,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:29:38,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-23 21:29:38,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954076461] [2023-11-23 21:29:38,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:38,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:38,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:38,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:38,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:29:38,719 INFO L87 Difference]: Start difference. First operand 2255 states and 2850 transitions. Second operand has 3 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 21:29:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:38,932 INFO L93 Difference]: Finished difference Result 2257 states and 2850 transitions. [2023-11-23 21:29:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:38,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 58 [2023-11-23 21:29:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:38,948 INFO L225 Difference]: With dead ends: 2257 [2023-11-23 21:29:38,949 INFO L226 Difference]: Without dead ends: 2255 [2023-11-23 21:29:38,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:29:38,951 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 51 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:38,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 199 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:29:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2023-11-23 21:29:39,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2255. [2023-11-23 21:29:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1711 states have (on average 1.2688486265341905) internal successors, (2171), 1718 states have internal predecessors, (2171), 327 states have call successors, (327), 203 states have call predecessors, (327), 211 states have return successors, (346), 334 states have call predecessors, (346), 327 states have call successors, (346) [2023-11-23 21:29:39,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2844 transitions. [2023-11-23 21:29:39,128 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2844 transitions. Word has length 58 [2023-11-23 21:29:39,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:39,128 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 2844 transitions. [2023-11-23 21:29:39,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 21:29:39,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2844 transitions. [2023-11-23 21:29:39,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-23 21:29:39,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:39,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:39,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:39,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:39,347 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:39,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1115777742, now seen corresponding path program 1 times [2023-11-23 21:29:39,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:39,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421337975] [2023-11-23 21:29:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:39,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:29:39,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421337975] [2023-11-23 21:29:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421337975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:29:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506733887] [2023-11-23 21:29:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:39,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:39,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:39,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:29:39,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:29:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:39,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:29:39,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:29:39,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:39,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506733887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:39,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:29:39,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-23 21:29:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494606617] [2023-11-23 21:29:39,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:39,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:39,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:39,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:39,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:29:39,659 INFO L87 Difference]: Start difference. First operand 2255 states and 2844 transitions. Second operand has 3 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 21:29:39,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:39,873 INFO L93 Difference]: Finished difference Result 2742 states and 3449 transitions. [2023-11-23 21:29:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:39,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 59 [2023-11-23 21:29:39,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:39,890 INFO L225 Difference]: With dead ends: 2742 [2023-11-23 21:29:39,890 INFO L226 Difference]: Without dead ends: 2740 [2023-11-23 21:29:39,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:29:39,893 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 40 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:39,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 193 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2023-11-23 21:29:40,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2724. [2023-11-23 21:29:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2070 states have (on average 1.2657004830917875) internal successors, (2620), 2077 states have internal predecessors, (2620), 394 states have call successors, (394), 246 states have call predecessors, (394), 254 states have return successors, (413), 401 states have call predecessors, (413), 394 states have call successors, (413) [2023-11-23 21:29:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3427 transitions. [2023-11-23 21:29:40,149 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3427 transitions. Word has length 59 [2023-11-23 21:29:40,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:40,149 INFO L495 AbstractCegarLoop]: Abstraction has 2724 states and 3427 transitions. [2023-11-23 21:29:40,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 21:29:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3427 transitions. [2023-11-23 21:29:40,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:29:40,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:40,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:40,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:40,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:29:40,359 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:40,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:40,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2137147501, now seen corresponding path program 1 times [2023-11-23 21:29:40,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:40,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567265334] [2023-11-23 21:29:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:40,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:29:40,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:40,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567265334] [2023-11-23 21:29:40,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567265334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:40,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:40,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:40,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22895345] [2023-11-23 21:29:40,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:40,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:40,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:40,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:40,407 INFO L87 Difference]: Start difference. First operand 2724 states and 3427 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:29:40,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:40,726 INFO L93 Difference]: Finished difference Result 4757 states and 6006 transitions. [2023-11-23 21:29:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:40,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-11-23 21:29:40,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:40,747 INFO L225 Difference]: With dead ends: 4757 [2023-11-23 21:29:40,747 INFO L226 Difference]: Without dead ends: 2756 [2023-11-23 21:29:40,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:40,754 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 78 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:40,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 186 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:29:40,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2023-11-23 21:29:40,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2359. [2023-11-23 21:29:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 1769 states have (on average 1.2560768795929904) internal successors, (2222), 1784 states have internal predecessors, (2222), 360 states have call successors, (360), 224 states have call predecessors, (360), 224 states have return successors, (360), 351 states have call predecessors, (360), 360 states have call successors, (360) [2023-11-23 21:29:41,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 2942 transitions. [2023-11-23 21:29:41,010 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 2942 transitions. Word has length 60 [2023-11-23 21:29:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:41,012 INFO L495 AbstractCegarLoop]: Abstraction has 2359 states and 2942 transitions. [2023-11-23 21:29:41,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:29:41,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 2942 transitions. [2023-11-23 21:29:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 21:29:41,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:41,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:41,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:29:41,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:41,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1589549073, now seen corresponding path program 1 times [2023-11-23 21:29:41,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:41,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905919145] [2023-11-23 21:29:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:29:41,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:41,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905919145] [2023-11-23 21:29:41,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905919145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:41,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:41,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:41,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217724032] [2023-11-23 21:29:41,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:41,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:41,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:41,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:41,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:41,117 INFO L87 Difference]: Start difference. First operand 2359 states and 2942 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:29:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:41,392 INFO L93 Difference]: Finished difference Result 3862 states and 4854 transitions. [2023-11-23 21:29:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:41,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2023-11-23 21:29:41,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:41,413 INFO L225 Difference]: With dead ends: 3862 [2023-11-23 21:29:41,413 INFO L226 Difference]: Without dead ends: 2683 [2023-11-23 21:29:41,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:41,418 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 43 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:41,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 238 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:41,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2023-11-23 21:29:41,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2530. [2023-11-23 21:29:41,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 1916 states have (on average 1.2609603340292275) internal successors, (2416), 1931 states have internal predecessors, (2416), 372 states have call successors, (372), 236 states have call predecessors, (372), 236 states have return successors, (372), 363 states have call predecessors, (372), 372 states have call successors, (372) [2023-11-23 21:29:41,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 3160 transitions. [2023-11-23 21:29:41,692 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 3160 transitions. Word has length 69 [2023-11-23 21:29:41,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:41,692 INFO L495 AbstractCegarLoop]: Abstraction has 2530 states and 3160 transitions. [2023-11-23 21:29:41,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:29:41,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 3160 transitions. [2023-11-23 21:29:41,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 21:29:41,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:41,700 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:41,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:29:41,700 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:41,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:41,701 INFO L85 PathProgramCache]: Analyzing trace with hash 410321135, now seen corresponding path program 1 times [2023-11-23 21:29:41,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:41,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709590755] [2023-11-23 21:29:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:41,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:29:41,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:41,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709590755] [2023-11-23 21:29:41,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709590755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:41,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:41,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:29:41,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579495102] [2023-11-23 21:29:41,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:41,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:29:41,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:41,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:29:41,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:29:41,759 INFO L87 Difference]: Start difference. First operand 2530 states and 3160 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:29:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:42,137 INFO L93 Difference]: Finished difference Result 4354 states and 5551 transitions. [2023-11-23 21:29:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:29:42,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2023-11-23 21:29:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:42,153 INFO L225 Difference]: With dead ends: 4354 [2023-11-23 21:29:42,153 INFO L226 Difference]: Without dead ends: 2542 [2023-11-23 21:29:42,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:29:42,159 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 184 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:42,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 290 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:29:42,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2023-11-23 21:29:42,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2524. [2023-11-23 21:29:42,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 1910 states have (on average 1.2303664921465969) internal successors, (2350), 1925 states have internal predecessors, (2350), 372 states have call successors, (372), 236 states have call predecessors, (372), 236 states have return successors, (372), 363 states have call predecessors, (372), 372 states have call successors, (372) [2023-11-23 21:29:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3094 transitions. [2023-11-23 21:29:42,413 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3094 transitions. Word has length 74 [2023-11-23 21:29:42,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:42,413 INFO L495 AbstractCegarLoop]: Abstraction has 2524 states and 3094 transitions. [2023-11-23 21:29:42,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:29:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3094 transitions. [2023-11-23 21:29:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 21:29:42,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:42,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:42,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:29:42,418 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:42,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:42,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1704674386, now seen corresponding path program 1 times [2023-11-23 21:29:42,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:42,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745191001] [2023-11-23 21:29:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:42,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 21:29:42,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:42,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745191001] [2023-11-23 21:29:42,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745191001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:42,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:42,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:29:42,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187252913] [2023-11-23 21:29:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:42,489 INFO L87 Difference]: Start difference. First operand 2524 states and 3094 transitions. Second operand has 3 states, 2 states have (on average 22.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:29:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:42,821 INFO L93 Difference]: Finished difference Result 2524 states and 3094 transitions. [2023-11-23 21:29:42,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:42,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2023-11-23 21:29:42,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:42,840 INFO L225 Difference]: With dead ends: 2524 [2023-11-23 21:29:42,841 INFO L226 Difference]: Without dead ends: 2522 [2023-11-23 21:29:42,842 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 [2023-11-23 21:29:42,844 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:42,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 92 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2023-11-23 21:29:43,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2522. [2023-11-23 21:29:43,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 1910 states have (on average 1.2240837696335078) internal successors, (2338), 1923 states have internal predecessors, (2338), 372 states have call successors, (372), 236 states have call predecessors, (372), 236 states have return successors, (372), 363 states have call predecessors, (372), 372 states have call successors, (372) [2023-11-23 21:29:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 3082 transitions. [2023-11-23 21:29:43,157 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 3082 transitions. Word has length 74 [2023-11-23 21:29:43,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:43,157 INFO L495 AbstractCegarLoop]: Abstraction has 2522 states and 3082 transitions. [2023-11-23 21:29:43,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:29:43,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 3082 transitions. [2023-11-23 21:29:43,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 21:29:43,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:43,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:43,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:29:43,161 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-23 21:29:43,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:43,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1305298070, now seen corresponding path program 1 times [2023-11-23 21:29:43,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:43,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712703754] [2023-11-23 21:29:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:43,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:29:43,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:29:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:29:43,249 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:29:43,249 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:29:43,251 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-23 21:29:43,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-23 21:29:43,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-23 21:29:43,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-23 21:29:43,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-23 21:29:43,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-23 21:29:43,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:29:43,257 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:43,261 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:29:43,315 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-23 21:29:43,331 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-23 21:29:43,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:29:43 BoogieIcfgContainer [2023-11-23 21:29:43,361 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:29:43,362 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:29:43,362 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:29:43,362 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:29:43,363 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:33" (3/4) ... [2023-11-23 21:29:43,364 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 21:29:43,381 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-23 21:29:43,383 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-23 21:29:43,457 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:29:43,457 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:29:43,458 INFO L158 Benchmark]: Toolchain (without parser) took 11809.35ms. Allocated memory was 134.2MB in the beginning and 455.1MB in the end (delta: 320.9MB). Free memory was 87.6MB in the beginning and 157.4MB in the end (delta: -69.8MB). Peak memory consumption was 252.5MB. Max. memory is 16.1GB. [2023-11-23 21:29:43,458 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 134.2MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:29:43,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.12ms. Allocated memory is still 134.2MB. Free memory was 87.2MB in the beginning and 73.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:29:43,459 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.39ms. Allocated memory is still 134.2MB. Free memory was 73.3MB in the beginning and 71.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:29:43,460 INFO L158 Benchmark]: Boogie Preprocessor took 35.35ms. Allocated memory is still 134.2MB. Free memory was 71.2MB in the beginning and 69.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:29:43,460 INFO L158 Benchmark]: RCFGBuilder took 946.73ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 69.2MB in the beginning and 120.5MB in the end (delta: -51.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:29:43,460 INFO L158 Benchmark]: TraceAbstraction took 10316.23ms. Allocated memory was 176.2MB in the beginning and 455.1MB in the end (delta: 278.9MB). Free memory was 120.5MB in the beginning and 164.8MB in the end (delta: -44.3MB). Peak memory consumption was 233.6MB. Max. memory is 16.1GB. [2023-11-23 21:29:43,461 INFO L158 Benchmark]: Witness Printer took 95.59ms. Allocated memory is still 455.1MB. Free memory was 164.8MB in the beginning and 157.4MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:29:43,463 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 134.2MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.12ms. Allocated memory is still 134.2MB. Free memory was 87.2MB in the beginning and 73.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.39ms. Allocated memory is still 134.2MB. Free memory was 73.3MB in the beginning and 71.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.35ms. Allocated memory is still 134.2MB. Free memory was 71.2MB in the beginning and 69.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 946.73ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 69.2MB in the beginning and 120.5MB in the end (delta: -51.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 10316.23ms. Allocated memory was 176.2MB in the beginning and 455.1MB in the end (delta: 278.9MB). Free memory was 120.5MB in the beginning and 164.8MB in the end (delta: -44.3MB). Peak memory consumption was 233.6MB. Max. memory is 16.1GB. * Witness Printer took 95.59ms. Allocated memory is still 455.1MB. Free memory was 164.8MB in the beginning and 157.4MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 113]: integer overflow possible integer overflow possible We found a FailurePath: [L24] int m_pc = 0; [L25] int t1_pc = 0; [L26] int t2_pc = 0; [L27] int m_st ; [L28] int t1_st ; [L29] int t2_st ; [L30] int m_i ; [L31] int t1_i ; [L32] int t2_i ; [L33] int M_E = 2; [L34] int T1_E = 2; [L35] int T2_E = 2; [L36] int E_M = 2; [L37] int E_1 = 2; [L38] int E_2 = 2; [L43] int token ; [L45] int local ; [L598] int __retres1 ; [L602] CALL init_model() [L512] m_i = 1 [L513] t1_i = 1 [L514] t2_i = 1 [L602] RET init_model() [L603] CALL start_simulation() [L539] int kernel_st ; [L540] int tmp ; [L541] int tmp___0 ; [L545] kernel_st = 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L546] FCALL update_channels() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L547] CALL init_threads() [L231] COND TRUE m_i == 1 [L232] m_st = 0 [L236] COND TRUE t1_i == 1 [L237] t1_st = 0 [L241] COND TRUE t2_i == 1 [L242] t2_st = 0 [L547] RET init_threads() [L548] CALL fire_delta_events() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L344] COND FALSE !(M_E == 0) [L349] COND FALSE !(T1_E == 0) [L354] COND FALSE !(T2_E == 0) [L359] COND FALSE !(E_M == 0) [L364] COND FALSE !(E_1 == 0) [L369] COND FALSE !(E_2 == 0) [L548] RET fire_delta_events() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L549] CALL activate_threads() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L417] int tmp ; [L418] int tmp___0 ; [L419] int tmp___1 ; [L423] CALL, EXPR is_master_triggered() [L163] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L166] COND FALSE !(m_pc == 1) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L176] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L178] return (__retres1); [L423] RET, EXPR is_master_triggered() [L423] tmp = is_master_triggered() [L425] COND FALSE !(\read(tmp)) [L431] CALL, EXPR is_transmit1_triggered() [L182] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L185] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L195] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L197] return (__retres1); [L431] RET, EXPR is_transmit1_triggered() [L431] tmp___0 = is_transmit1_triggered() [L433] COND FALSE !(\read(tmp___0)) [L439] CALL, EXPR is_transmit2_triggered() [L201] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L204] COND FALSE !(t2_pc == 1) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L214] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, __retres1=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L216] return (__retres1); [L439] RET, EXPR is_transmit2_triggered() [L439] tmp___1 = is_transmit2_triggered() [L441] COND FALSE !(\read(tmp___1)) [L549] RET activate_threads() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L550] CALL reset_delta_events() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L382] COND FALSE !(M_E == 1) [L387] COND FALSE !(T1_E == 1) [L392] COND FALSE !(T2_E == 1) [L397] COND FALSE !(E_M == 1) [L402] COND FALSE !(E_1 == 1) [L407] COND FALSE !(E_2 == 1) [L550] RET reset_delta_events() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L553] COND TRUE 1 [L556] kernel_st = 1 [L557] CALL eval() [L277] int tmp ; VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L281] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L284] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L251] int __retres1 ; [L254] COND TRUE m_st == 0 [L255] __retres1 = 1 [L272] return (__retres1); [L284] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=0] [L284] tmp = exists_runnable_thread() [L286] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=0] [L291] COND TRUE m_st == 0 [L292] int tmp_ndt_1; [L293] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L294] COND FALSE, EXPR !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, tmp=1, tmp_ndt_1=0, token=0] [L291-L302] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=0] [L305] COND TRUE t1_st == 0 [L306] int tmp_ndt_2; [L307] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L308] COND TRUE, EXPR \read(tmp_ndt_2) [L310] EXPR t1_st = 1 [L311] CALL, EXPR transmit1() [L94] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=1, t2_i=1, t2_pc=0, t2_st=0, token=0] [L105] COND TRUE 1 [L107] t1_pc = 1 [L108] t1_st = 2 [L311] RET, EXPR transmit1() [L305-L316] { int tmp_ndt_2; tmp_ndt_2 = __VERIFIER_nondet_int(); if (tmp_ndt_2) { { t1_st = 1; transmit1(); } } else { } } VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=0] [L319] COND TRUE t2_st == 0 [L320] int tmp_ndt_3; [L321] EXPR tmp_ndt_3 = __VERIFIER_nondet_int() [L322] COND FALSE, EXPR !(\read(tmp_ndt_3)) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, tmp_ndt_3=0, token=0] [L319-L330] { int tmp_ndt_3; tmp_ndt_3 = __VERIFIER_nondet_int(); if (tmp_ndt_3) { { t2_st = 1; transmit2(); } } else { } } VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=0] [L281] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=0] [L284] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L251] int __retres1 ; [L254] COND TRUE m_st == 0 [L255] __retres1 = 1 [L272] return (__retres1); [L284] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=0] [L284] tmp = exists_runnable_thread() [L286] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=0] [L291] COND TRUE m_st == 0 [L292] int tmp_ndt_1; [L293] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L294] COND TRUE, EXPR \read(tmp_ndt_1) [L296] EXPR m_st = 1 [L297] CALL, EXPR master() [L50] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, token=0] [L61] COND TRUE 1 [L64] token = __VERIFIER_nondet_int() [L65] local = token [L66] E_1 = 1 VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L67] CALL immediate_notify() VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L455] CALL activate_threads() VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L417] int tmp ; [L418] int tmp___0 ; [L419] int tmp___1 ; [L423] CALL, EXPR is_master_triggered() [L163] int __retres1 ; VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L166] COND FALSE !(m_pc == 1) VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L176] __retres1 = 0 VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, __retres1=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L178] return (__retres1); [L423] RET, EXPR is_master_triggered() [L423] tmp = is_master_triggered() [L425] COND FALSE !(\read(tmp)) [L431] CALL, EXPR is_transmit1_triggered() [L182] int __retres1 ; VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L185] COND TRUE t1_pc == 1 VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L186] COND TRUE E_1 == 1 [L187] __retres1 = 1 VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, __retres1=1, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L197] return (__retres1); [L431] RET, EXPR is_transmit1_triggered() [L431] tmp___0 = is_transmit1_triggered() [L433] COND TRUE \read(tmp___0) [L434] t1_st = 0 [L439] CALL, EXPR is_transmit2_triggered() [L201] int __retres1 ; VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L204] COND FALSE !(t2_pc == 1) VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L214] __retres1 = 0 VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, __retres1=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L216] return (__retres1); [L439] RET, EXPR is_transmit2_triggered() [L439] tmp___1 = is_transmit2_triggered() [L441] COND FALSE !(\read(tmp___1)) [L455] RET activate_threads() VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=0, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L67] RET immediate_notify() VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=2147483647, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L68] E_1 = 2 [L69] m_pc = 1 [L70] m_st = 2 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=2147483647, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L297] RET, EXPR master() [L291-L302] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=2147483647, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, tmp=1, token=2147483647] [L305] COND TRUE t1_st == 0 [L306] int tmp_ndt_2; [L307] tmp_ndt_2 = __VERIFIER_nondet_int() [L308] COND TRUE \read(tmp_ndt_2) [L310] t1_st = 1 [L311] CALL transmit1() [L94] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=2147483647, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L97] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=2147483647, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] [L113] token += 1 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, local=2147483647, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=0, t2_st=0, token=2147483647] - UnprovableResult [Line: 75]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 75]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 149]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 149]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 90 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1978 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1949 mSDsluCounter, 3196 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1581 mSDsCounter, 385 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1181 IncrementalHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 385 mSolverCounterUnsat, 1615 mSDtfsCounter, 1181 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2724occurred in iteration=9, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 1065 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 893 NumberOfCodeBlocks, 893 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 803 ConstructedInterpolants, 0 QuantifiedInterpolants, 1538 SizeOfPredicates, 0 NumberOfNonLiveVariables, 517 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 163/165 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-23 21:29:43,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda15da3-f608-4bd8-9a60-821e5868b956/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)