./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/systemc/token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.02.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91 --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 bc8487f898950b83c481f83a71342af68752fb6e7598d76df123761c32c89f72 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:56:42,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:56:42,568 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:56:42,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:56:42,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:56:42,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:56:42,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:56:42,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:56:42,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:56:42,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:56:42,638 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:56:42,639 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:56:42,640 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:56:42,642 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:56:42,642 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:56:42,643 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:56:42,643 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:56:42,644 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:56:42,644 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:56:42,645 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:56:42,645 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:56:42,646 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:56:42,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:56:42,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:56:42,648 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:56:42,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:56:42,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:56:42,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:56:42,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:56:42,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:56:42,672 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:56:42,672 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:56:42,673 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:56:42,673 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:56:42,673 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:56:42,674 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:56:42,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:56:42,674 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:56:42,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:56:42,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:42,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:56:42,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:56:42,677 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:56:42,677 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:56:42,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:56:42,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:56:42,678 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:56:42,679 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:56:42,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:56:42,679 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_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc8487f898950b83c481f83a71342af68752fb6e7598d76df123761c32c89f72 [2023-11-24 23:56:43,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:56:43,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:56:43,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:56:43,044 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:56:43,045 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:56:43,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/systemc/token_ring.02.cil-2.c [2023-11-24 23:56:46,224 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:56:46,519 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:56:46,520 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/sv-benchmarks/c/systemc/token_ring.02.cil-2.c [2023-11-24 23:56:46,533 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/data/2a85a3db4/e20cec597d3941b39eceb24ecb2342e8/FLAGe2beb7a07 [2023-11-24 23:56:46,548 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/data/2a85a3db4/e20cec597d3941b39eceb24ecb2342e8 [2023-11-24 23:56:46,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:56:46,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:56:46,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:46,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:56:46,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:56:46,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767627eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46, skipping insertion in model container [2023-11-24 23:56:46,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,607 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:56:46,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:46,836 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:56:46,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:46,903 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:56:46,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46 WrapperNode [2023-11-24 23:56:46,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:46,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:46,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:56:46,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:56:46,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,955 INFO L138 Inliner]: procedures = 32, calls = 39, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 296 [2023-11-24 23:56:46,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:46,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:56:46,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:56:46,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:56:46,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:46,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:56:46,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:56:46,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:56:46,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:56:47,006 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (1/1) ... [2023-11-24 23:56:47,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:47,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:47,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:56:47,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:56:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:56:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-24 23:56:47,117 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-24 23:56:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 23:56:47,117 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 23:56:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 23:56:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 23:56:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 23:56:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 23:56:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 23:56:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 23:56:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 23:56:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 23:56:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:56:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 23:56:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 23:56:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:56:47,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:56:47,209 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:56:47,212 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:56:47,747 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:56:48,017 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:56:48,018 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-24 23:56:48,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:48 BoogieIcfgContainer [2023-11-24 23:56:48,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:56:48,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:56:48,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:56:48,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:56:48,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:56:46" (1/3) ... [2023-11-24 23:56:48,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bdc87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:48, skipping insertion in model container [2023-11-24 23:56:48,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:46" (2/3) ... [2023-11-24 23:56:48,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bdc87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:48, skipping insertion in model container [2023-11-24 23:56:48,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:48" (3/3) ... [2023-11-24 23:56:48,030 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.02.cil-2.c [2023-11-24 23:56:48,051 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:56:48,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-24 23:56:48,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:56:48,115 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;@48de3ea0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:56:48,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 23:56:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 66 states have (on average 1.5151515151515151) internal successors, (100), 75 states have internal predecessors, (100), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-24 23:56:48,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:56:48,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:48,133 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] [2023-11-24 23:56:48,133 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)] === [2023-11-24 23:56:48,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:48,140 INFO L85 PathProgramCache]: Analyzing trace with hash 683222537, now seen corresponding path program 1 times [2023-11-24 23:56:48,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:48,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009097937] [2023-11-24 23:56:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:48,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:48,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:48,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009097937] [2023-11-24 23:56:48,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009097937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:48,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:48,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:56:48,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452262989] [2023-11-24 23:56:48,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:48,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:48,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:48,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:48,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:48,670 INFO L87 Difference]: Start difference. First operand has 98 states, 66 states have (on average 1.5151515151515151) internal successors, (100), 75 states have internal predecessors, (100), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) 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) [2023-11-24 23:56:49,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:49,070 INFO L93 Difference]: Finished difference Result 267 states and 381 transitions. [2023-11-24 23:56:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:56:49,072 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 [2023-11-24 23:56:49,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:49,081 INFO L225 Difference]: With dead ends: 267 [2023-11-24 23:56:49,081 INFO L226 Difference]: Without dead ends: 167 [2023-11-24 23:56:49,085 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 [2023-11-24 23:56:49,089 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 211 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:49,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 320 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:56:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-24 23:56:49,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2023-11-24 23:56:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 116 states have (on average 1.3879310344827587) internal successors, (161), 123 states have internal predecessors, (161), 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) [2023-11-24 23:56:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 217 transitions. [2023-11-24 23:56:49,155 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 217 transitions. Word has length 35 [2023-11-24 23:56:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:49,156 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 217 transitions. [2023-11-24 23:56:49,156 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) [2023-11-24 23:56:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 217 transitions. [2023-11-24 23:56:49,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-24 23:56:49,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:49,159 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] [2023-11-24 23:56:49,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:56:49,160 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)] === [2023-11-24 23:56:49,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:49,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1613133081, now seen corresponding path program 1 times [2023-11-24 23:56:49,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:49,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000504315] [2023-11-24 23:56:49,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:49,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:49,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:49,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000504315] [2023-11-24 23:56:49,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000504315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:49,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:49,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:56:49,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173268250] [2023-11-24 23:56:49,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:49,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:56:49,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:49,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:56:49,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:56:49,395 INFO L87 Difference]: Start difference. First operand 162 states and 217 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) [2023-11-24 23:56:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:49,882 INFO L93 Difference]: Finished difference Result 532 states and 711 transitions. [2023-11-24 23:56:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:56:49,883 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 [2023-11-24 23:56:49,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:49,896 INFO L225 Difference]: With dead ends: 532 [2023-11-24 23:56:49,897 INFO L226 Difference]: Without dead ends: 358 [2023-11-24 23:56:49,907 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 [2023-11-24 23:56:49,919 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 354 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 490 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 [2023-11-24 23:56:49,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 490 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:56:49,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-24 23:56:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 344. [2023-11-24 23:56:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.3671875) internal successors, (350), 262 states have internal predecessors, (350), 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) [2023-11-24 23:56:50,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 463 transitions. [2023-11-24 23:56:50,037 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 463 transitions. Word has length 36 [2023-11-24 23:56:50,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:50,037 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 463 transitions. [2023-11-24 23:56:50,037 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) [2023-11-24 23:56:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 463 transitions. [2023-11-24 23:56:50,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-24 23:56:50,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:50,040 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] [2023-11-24 23:56:50,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:56:50,040 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)] === [2023-11-24 23:56:50,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash -951799290, now seen corresponding path program 1 times [2023-11-24 23:56:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:50,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897984111] [2023-11-24 23:56:50,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:50,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:50,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897984111] [2023-11-24 23:56:50,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897984111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:50,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:50,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:56:50,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18662801] [2023-11-24 23:56:50,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:50,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:56:50,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:50,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:56:50,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:56:50,292 INFO L87 Difference]: Start difference. First operand 344 states and 463 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) [2023-11-24 23:56:50,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:50,633 INFO L93 Difference]: Finished difference Result 918 states and 1232 transitions. [2023-11-24 23:56:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:56:50,633 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 [2023-11-24 23:56:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:50,639 INFO L225 Difference]: With dead ends: 918 [2023-11-24 23:56:50,640 INFO L226 Difference]: Without dead ends: 580 [2023-11-24 23:56:50,641 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 [2023-11-24 23:56:50,643 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 269 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:50,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 333 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:56:50,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-11-24 23:56:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 541. [2023-11-24 23:56:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 406 states have (on average 1.3497536945812807) internal successors, (548), 410 states have internal predecessors, (548), 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) [2023-11-24 23:56:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 719 transitions. [2023-11-24 23:56:50,713 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 719 transitions. Word has length 36 [2023-11-24 23:56:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:50,714 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 719 transitions. [2023-11-24 23:56:50,714 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) [2023-11-24 23:56:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 719 transitions. [2023-11-24 23:56:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 23:56:50,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:50,716 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] [2023-11-24 23:56:50,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:56:50,716 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)] === [2023-11-24 23:56:50,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:50,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1130462643, now seen corresponding path program 1 times [2023-11-24 23:56:50,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:50,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599676798] [2023-11-24 23:56:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:50,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:50,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:50,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599676798] [2023-11-24 23:56:50,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599676798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:50,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:50,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:50,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851910823] [2023-11-24 23:56:50,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:50,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:50,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:50,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:50,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:50,765 INFO L87 Difference]: Start difference. First operand 541 states and 719 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) [2023-11-24 23:56:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:50,904 INFO L93 Difference]: Finished difference Result 1558 states and 2082 transitions. [2023-11-24 23:56:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:50,904 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 [2023-11-24 23:56:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:50,912 INFO L225 Difference]: With dead ends: 1558 [2023-11-24 23:56:50,913 INFO L226 Difference]: Without dead ends: 1022 [2023-11-24 23:56:50,915 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 [2023-11-24 23:56:50,916 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 93 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:50,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 198 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2023-11-24 23:56:51,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1006. [2023-11-24 23:56:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 758 states have (on average 1.3139841688654355) internal successors, (996), 762 states have internal predecessors, (996), 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) [2023-11-24 23:56:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1310 transitions. [2023-11-24 23:56:51,035 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1310 transitions. Word has length 38 [2023-11-24 23:56:51,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:51,035 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1310 transitions. [2023-11-24 23:56:51,036 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) [2023-11-24 23:56:51,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1310 transitions. [2023-11-24 23:56:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-24 23:56:51,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:51,045 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] [2023-11-24 23:56:51,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:56:51,047 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)] === [2023-11-24 23:56:51,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:51,048 INFO L85 PathProgramCache]: Analyzing trace with hash -576384355, now seen corresponding path program 1 times [2023-11-24 23:56:51,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:51,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259327233] [2023-11-24 23:56:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:51,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:51,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:51,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259327233] [2023-11-24 23:56:51,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259327233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:51,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:51,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:51,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173314624] [2023-11-24 23:56:51,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:51,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:51,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:51,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:51,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:51,128 INFO L87 Difference]: Start difference. First operand 1006 states and 1310 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2023-11-24 23:56:51,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:51,271 INFO L93 Difference]: Finished difference Result 1837 states and 2421 transitions. [2023-11-24 23:56:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:51,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 53 [2023-11-24 23:56:51,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:51,281 INFO L225 Difference]: With dead ends: 1837 [2023-11-24 23:56:51,282 INFO L226 Difference]: Without dead ends: 1302 [2023-11-24 23:56:51,284 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 [2023-11-24 23:56:51,285 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 57 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 275 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 [2023-11-24 23:56:51,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 275 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:51,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2023-11-24 23:56:51,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1133. [2023-11-24 23:56:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 869 states have (on average 1.3245109321058688) internal successors, (1151), 873 states have internal predecessors, (1151), 158 states have call successors, (158), 94 states have call predecessors, (158), 100 states have return successors, (172), 166 states have call predecessors, (172), 158 states have call successors, (172) [2023-11-24 23:56:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1481 transitions. [2023-11-24 23:56:51,401 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1481 transitions. Word has length 53 [2023-11-24 23:56:51,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:51,402 INFO L495 AbstractCegarLoop]: Abstraction has 1133 states and 1481 transitions. [2023-11-24 23:56:51,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2023-11-24 23:56:51,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1481 transitions. [2023-11-24 23:56:51,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-24 23:56:51,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:51,404 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] [2023-11-24 23:56:51,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:56:51,405 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)] === [2023-11-24 23:56:51,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:51,406 INFO L85 PathProgramCache]: Analyzing trace with hash -99274182, now seen corresponding path program 1 times [2023-11-24 23:56:51,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:51,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84332191] [2023-11-24 23:56:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:51,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 23:56:51,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:51,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84332191] [2023-11-24 23:56:51,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84332191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:51,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:51,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:56:51,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708746705] [2023-11-24 23:56:51,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:51,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:56:51,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:51,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:56:51,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:56:51,596 INFO L87 Difference]: Start difference. First operand 1133 states and 1481 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) [2023-11-24 23:56:52,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:52,001 INFO L93 Difference]: Finished difference Result 2797 states and 3654 transitions. [2023-11-24 23:56:52,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:56:52,002 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 [2023-11-24 23:56:52,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:52,014 INFO L225 Difference]: With dead ends: 2797 [2023-11-24 23:56:52,015 INFO L226 Difference]: Without dead ends: 1670 [2023-11-24 23:56:52,018 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 [2023-11-24 23:56:52,020 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 268 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:52,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 353 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:56:52,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2023-11-24 23:56:52,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1582. [2023-11-24 23:56:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1205 states have (on average 1.3070539419087137) internal successors, (1575), 1209 states have internal predecessors, (1575), 227 states have call successors, (227), 136 states have call predecessors, (227), 144 states have return successors, (246), 237 states have call predecessors, (246), 227 states have call successors, (246) [2023-11-24 23:56:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2048 transitions. [2023-11-24 23:56:52,210 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2048 transitions. Word has length 54 [2023-11-24 23:56:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:52,211 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2048 transitions. [2023-11-24 23:56:52,211 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) [2023-11-24 23:56:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2048 transitions. [2023-11-24 23:56:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-24 23:56:52,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:52,213 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] [2023-11-24 23:56:52,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:56:52,214 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:56:52,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:52,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1145855671, now seen corresponding path program 1 times [2023-11-24 23:56:52,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:52,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130703358] [2023-11-24 23:56:52,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:52,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:52,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:52,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130703358] [2023-11-24 23:56:52,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130703358] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:52,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135853827] [2023-11-24 23:56:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:52,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:52,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:52,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:52,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:56:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:52,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:56:52,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:56:52,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:52,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135853827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:52,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:56:52,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-24 23:56:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831949044] [2023-11-24 23:56:52,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:52,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:56:52,616 INFO L87 Difference]: Start difference. First operand 1582 states and 2048 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) [2023-11-24 23:56:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:52,811 INFO L93 Difference]: Finished difference Result 1584 states and 2048 transitions. [2023-11-24 23:56:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:52,812 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 [2023-11-24 23:56:52,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:52,824 INFO L225 Difference]: With dead ends: 1584 [2023-11-24 23:56:52,824 INFO L226 Difference]: Without dead ends: 1582 [2023-11-24 23:56:52,826 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 [2023-11-24 23:56:52,827 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 51 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 211 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 [2023-11-24 23:56:52,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 211 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:52,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2023-11-24 23:56:52,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2023-11-24 23:56:52,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1205 states have (on average 1.3029045643153527) internal successors, (1570), 1209 states have internal predecessors, (1570), 227 states have call successors, (227), 136 states have call predecessors, (227), 144 states have return successors, (246), 237 states have call predecessors, (246), 227 states have call successors, (246) [2023-11-24 23:56:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2043 transitions. [2023-11-24 23:56:52,969 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2043 transitions. Word has length 58 [2023-11-24 23:56:52,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:52,970 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2043 transitions. [2023-11-24 23:56:52,970 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) [2023-11-24 23:56:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2043 transitions. [2023-11-24 23:56:52,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-24 23:56:52,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:52,972 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] [2023-11-24 23:56:52,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:53,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:53,179 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)] === [2023-11-24 23:56:53,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:53,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1176570879, now seen corresponding path program 1 times [2023-11-24 23:56:53,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:53,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742654098] [2023-11-24 23:56:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:53,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 23:56:53,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:53,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742654098] [2023-11-24 23:56:53,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742654098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:53,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:53,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:53,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282003248] [2023-11-24 23:56:53,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:53,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:53,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:53,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:53,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:53,259 INFO L87 Difference]: Start difference. First operand 1582 states and 2043 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) [2023-11-24 23:56:53,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:53,437 INFO L93 Difference]: Finished difference Result 2696 states and 3499 transitions. [2023-11-24 23:56:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:53,438 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 [2023-11-24 23:56:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:53,450 INFO L225 Difference]: With dead ends: 2696 [2023-11-24 23:56:53,451 INFO L226 Difference]: Without dead ends: 1731 [2023-11-24 23:56:53,454 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 [2023-11-24 23:56:53,456 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:53,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 201 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2023-11-24 23:56:53,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1326. [2023-11-24 23:56:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 997 states have (on average 1.2858575727181545) internal successors, (1282), 1009 states have internal predecessors, (1282), 201 states have call successors, (201), 122 states have call predecessors, (201), 122 states have return successors, (201), 195 states have call predecessors, (201), 201 states have call successors, (201) [2023-11-24 23:56:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1684 transitions. [2023-11-24 23:56:53,585 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1684 transitions. Word has length 60 [2023-11-24 23:56:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:53,586 INFO L495 AbstractCegarLoop]: Abstraction has 1326 states and 1684 transitions. [2023-11-24 23:56:53,587 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) [2023-11-24 23:56:53,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1684 transitions. [2023-11-24 23:56:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-24 23:56:53,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:53,589 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] [2023-11-24 23:56:53,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:56:53,590 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)] === [2023-11-24 23:56:53,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:53,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1161787848, now seen corresponding path program 1 times [2023-11-24 23:56:53,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:53,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114752553] [2023-11-24 23:56:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:53,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:53,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114752553] [2023-11-24 23:56:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114752553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14413517] [2023-11-24 23:56:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:53,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:53,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:53,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:53,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:56:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:53,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:56:53,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:56:53,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:53,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14413517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:53,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:56:53,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-24 23:56:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883585537] [2023-11-24 23:56:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:53,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:53,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:53,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:56:53,933 INFO L87 Difference]: Start difference. First operand 1326 states and 1684 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) [2023-11-24 23:56:54,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:54,100 INFO L93 Difference]: Finished difference Result 1641 states and 2081 transitions. [2023-11-24 23:56:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:54,101 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 [2023-11-24 23:56:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:54,112 INFO L225 Difference]: With dead ends: 1641 [2023-11-24 23:56:54,112 INFO L226 Difference]: Without dead ends: 1639 [2023-11-24 23:56:54,113 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 [2023-11-24 23:56:54,114 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 40 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:54,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 205 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2023-11-24 23:56:54,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1629. [2023-11-24 23:56:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1231 states have (on average 1.2835093419983754) internal successors, (1580), 1243 states have internal predecessors, (1580), 243 states have call successors, (243), 149 states have call predecessors, (243), 149 states have return successors, (243), 237 states have call predecessors, (243), 243 states have call successors, (243) [2023-11-24 23:56:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2066 transitions. [2023-11-24 23:56:54,265 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2066 transitions. Word has length 59 [2023-11-24 23:56:54,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:54,267 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2066 transitions. [2023-11-24 23:56:54,267 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) [2023-11-24 23:56:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2066 transitions. [2023-11-24 23:56:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-24 23:56:54,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:54,270 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] [2023-11-24 23:56:54,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:54,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:54,477 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:56:54,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:54,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1462633422, now seen corresponding path program 1 times [2023-11-24 23:56:54,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:54,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870734592] [2023-11-24 23:56:54,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:54,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:56:54,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:54,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870734592] [2023-11-24 23:56:54,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870734592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:54,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:54,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:54,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554430099] [2023-11-24 23:56:54,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:54,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:54,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:54,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:54,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:54,567 INFO L87 Difference]: Start difference. First operand 1629 states and 2066 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2023-11-24 23:56:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:54,747 INFO L93 Difference]: Finished difference Result 2694 states and 3450 transitions. [2023-11-24 23:56:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:54,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 67 [2023-11-24 23:56:54,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:54,759 INFO L225 Difference]: With dead ends: 2694 [2023-11-24 23:56:54,760 INFO L226 Difference]: Without dead ends: 1858 [2023-11-24 23:56:54,763 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 [2023-11-24 23:56:54,764 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 45 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 250 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 [2023-11-24 23:56:54,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 250 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:54,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2023-11-24 23:56:54,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1751. [2023-11-24 23:56:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1337 states have (on average 1.2924457741211668) internal successors, (1728), 1349 states have internal predecessors, (1728), 251 states have call successors, (251), 157 states have call predecessors, (251), 157 states have return successors, (251), 245 states have call predecessors, (251), 251 states have call successors, (251) [2023-11-24 23:56:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2230 transitions. [2023-11-24 23:56:54,938 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2230 transitions. Word has length 67 [2023-11-24 23:56:54,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:54,939 INFO L495 AbstractCegarLoop]: Abstraction has 1751 states and 2230 transitions. [2023-11-24 23:56:54,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2023-11-24 23:56:54,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2230 transitions. [2023-11-24 23:56:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-24 23:56:54,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:54,942 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] [2023-11-24 23:56:54,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 23:56:54,942 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:56:54,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1494180993, now seen corresponding path program 1 times [2023-11-24 23:56:54,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921648783] [2023-11-24 23:56:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:54,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:55,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:55,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921648783] [2023-11-24 23:56:55,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921648783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:55,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326500061] [2023-11-24 23:56:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:55,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:55,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:55,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:55,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:56:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:55,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:56:55,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:56:55,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:55,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326500061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:55,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:56:55,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-24 23:56:55,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088111971] [2023-11-24 23:56:55,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:55,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:55,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:56:55,253 INFO L87 Difference]: Start difference. First operand 1751 states and 2230 transitions. Second operand has 3 states, 2 states have (on average 25.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 23:56:55,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:55,412 INFO L93 Difference]: Finished difference Result 1751 states and 2230 transitions. [2023-11-24 23:56:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:55,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 25.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-11-24 23:56:55,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:55,423 INFO L225 Difference]: With dead ends: 1751 [2023-11-24 23:56:55,423 INFO L226 Difference]: Without dead ends: 1749 [2023-11-24 23:56:55,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:56:55,425 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 95 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 99 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 [2023-11-24 23:56:55,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 99 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:55,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2023-11-24 23:56:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1749. [2023-11-24 23:56:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1337 states have (on average 1.2849663425579656) internal successors, (1718), 1347 states have internal predecessors, (1718), 251 states have call successors, (251), 157 states have call predecessors, (251), 157 states have return successors, (251), 245 states have call predecessors, (251), 251 states have call successors, (251) [2023-11-24 23:56:55,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2220 transitions. [2023-11-24 23:56:55,662 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2220 transitions. Word has length 72 [2023-11-24 23:56:55,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:55,663 INFO L495 AbstractCegarLoop]: Abstraction has 1749 states and 2220 transitions. [2023-11-24 23:56:55,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 25.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 23:56:55,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2220 transitions. [2023-11-24 23:56:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-24 23:56:55,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:55,666 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] [2023-11-24 23:56:55,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:55,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 23:56:55,872 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:56:55,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:55,873 INFO L85 PathProgramCache]: Analyzing trace with hash 925029842, now seen corresponding path program 1 times [2023-11-24 23:56:55,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:55,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108009200] [2023-11-24 23:56:55,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:55,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:56,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:56,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108009200] [2023-11-24 23:56:56,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108009200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:56,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786468669] [2023-11-24 23:56:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:56,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:56,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:56,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:56,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:56:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:56,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:56:56,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:56,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:56,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786468669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:56,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:56:56,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-24 23:56:56,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767263113] [2023-11-24 23:56:56,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:56,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:56,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:56,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:56,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:56:56,179 INFO L87 Difference]: Start difference. First operand 1749 states and 2220 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:56:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:56,405 INFO L93 Difference]: Finished difference Result 3019 states and 3909 transitions. [2023-11-24 23:56:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:56,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2023-11-24 23:56:56,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:56,415 INFO L225 Difference]: With dead ends: 3019 [2023-11-24 23:56:56,415 INFO L226 Difference]: Without dead ends: 1757 [2023-11-24 23:56:56,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:56:56,420 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 89 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:56,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 235 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:56,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2023-11-24 23:56:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1745. [2023-11-24 23:56:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1333 states have (on average 1.255813953488372) internal successors, (1674), 1343 states have internal predecessors, (1674), 251 states have call successors, (251), 157 states have call predecessors, (251), 157 states have return successors, (251), 245 states have call predecessors, (251), 251 states have call successors, (251) [2023-11-24 23:56:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2176 transitions. [2023-11-24 23:56:56,593 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2176 transitions. Word has length 73 [2023-11-24 23:56:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:56,593 INFO L495 AbstractCegarLoop]: Abstraction has 1745 states and 2176 transitions. [2023-11-24 23:56:56,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:56:56,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2176 transitions. [2023-11-24 23:56:56,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-24 23:56:56,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:56,596 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] [2023-11-24 23:56:56,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:56,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:56:56,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:56:56,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:56,803 INFO L85 PathProgramCache]: Analyzing trace with hash -215321869, now seen corresponding path program 1 times [2023-11-24 23:56:56,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:56,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411464969] [2023-11-24 23:56:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:56,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:56,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:56,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411464969] [2023-11-24 23:56:56,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411464969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:56,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434884220] [2023-11-24 23:56:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:56,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:56,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:56,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:57,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:56:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:57,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:56:57,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:57,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:57,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434884220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:57,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:56:57,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2023-11-24 23:56:57,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844846678] [2023-11-24 23:56:57,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:57,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:56:57,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:57,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:56:57,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:56:57,230 INFO L87 Difference]: Start difference. First operand 1745 states and 2176 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:56:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:57,756 INFO L93 Difference]: Finished difference Result 4300 states and 5341 transitions. [2023-11-24 23:56:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:56:57,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2023-11-24 23:56:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:57,772 INFO L225 Difference]: With dead ends: 4300 [2023-11-24 23:56:57,772 INFO L226 Difference]: Without dead ends: 2561 [2023-11-24 23:56:57,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:56:57,778 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 251 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:57,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 275 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:56:57,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2023-11-24 23:56:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2558. [2023-11-24 23:56:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2558 states, 1946 states have (on average 1.2291880781089415) internal successors, (2392), 1959 states have internal predecessors, (2392), 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) [2023-11-24 23:56:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 3136 transitions. [2023-11-24 23:56:58,112 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 3136 transitions. Word has length 73 [2023-11-24 23:56:58,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:58,112 INFO L495 AbstractCegarLoop]: Abstraction has 2558 states and 3136 transitions. [2023-11-24 23:56:58,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:56:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 3136 transitions. [2023-11-24 23:56:58,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-24 23:56:58,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:58,115 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] [2023-11-24 23:56:58,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:58,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 23:56:58,327 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)] === [2023-11-24 23:56:58,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:58,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2000371339, now seen corresponding path program 1 times [2023-11-24 23:56:58,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:58,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115512179] [2023-11-24 23:56:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:58,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:56:58,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:56:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:56:58,451 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:56:58,451 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:56:58,452 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-24 23:56:58,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-24 23:56:58,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-24 23:56:58,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-24 23:56:58,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-24 23:56:58,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-24 23:56:58,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 23:56:58,459 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:58,464 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:56:58,544 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-24 23:56:58,556 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-24 23:56:58,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:56:58 BoogieIcfgContainer [2023-11-24 23:56:58,594 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:56:58,595 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:56:58,595 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:56:58,595 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:56:58,596 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:48" (3/4) ... [2023-11-24 23:56:58,597 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 23:56:58,623 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-24 23:56:58,624 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-24 23:56:58,734 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-24 23:56:58,734 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:56:58,735 INFO L158 Benchmark]: Toolchain (without parser) took 12182.12ms. Allocated memory was 155.2MB in the beginning and 318.8MB in the end (delta: 163.6MB). Free memory was 109.5MB in the beginning and 163.6MB in the end (delta: -54.2MB). Peak memory consumption was 110.0MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,735 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 155.2MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:56:58,735 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.73ms. Allocated memory is still 155.2MB. Free memory was 108.9MB in the beginning and 95.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.33ms. Allocated memory is still 155.2MB. Free memory was 94.8MB in the beginning and 92.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,737 INFO L158 Benchmark]: Boogie Preprocessor took 36.54ms. Allocated memory is still 155.2MB. Free memory was 92.7MB in the beginning and 91.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:56:58,737 INFO L158 Benchmark]: RCFGBuilder took 1024.73ms. Allocated memory was 155.2MB in the beginning and 220.2MB in the end (delta: 65.0MB). Free memory was 90.6MB in the beginning and 186.6MB in the end (delta: -95.9MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,738 INFO L158 Benchmark]: TraceAbstraction took 10571.68ms. Allocated memory was 220.2MB in the beginning and 318.8MB in the end (delta: 98.6MB). Free memory was 185.5MB in the beginning and 172.0MB in the end (delta: 13.5MB). Peak memory consumption was 111.0MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,739 INFO L158 Benchmark]: Witness Printer took 139.36ms. Allocated memory is still 318.8MB. Free memory was 172.0MB in the beginning and 163.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,741 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 155.2MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.73ms. Allocated memory is still 155.2MB. Free memory was 108.9MB in the beginning and 95.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.33ms. Allocated memory is still 155.2MB. Free memory was 94.8MB in the beginning and 92.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.54ms. Allocated memory is still 155.2MB. Free memory was 92.7MB in the beginning and 91.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1024.73ms. Allocated memory was 155.2MB in the beginning and 220.2MB in the end (delta: 65.0MB). Free memory was 90.6MB in the beginning and 186.6MB in the end (delta: -95.9MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. * TraceAbstraction took 10571.68ms. Allocated memory was 220.2MB in the beginning and 318.8MB in the end (delta: 98.6MB). Free memory was 185.5MB in the beginning and 172.0MB in the end (delta: 13.5MB). Peak memory consumption was 111.0MB. Max. memory is 16.1GB. * Witness Printer took 139.36ms. Allocated memory is still 318.8MB. Free memory was 172.0MB in the beginning and 163.6MB in the end (delta: 8.4MB). 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~ret6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 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: 125]: 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 ; [L610] int __retres1 ; [L614] CALL init_model() [L524] m_i = 1 [L525] t1_i = 1 [L526] t2_i = 1 [L614] RET init_model() [L615] CALL start_simulation() [L551] int kernel_st ; [L552] int tmp ; [L553] int tmp___0 ; [L557] 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] [L558] 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] [L559] CALL init_threads() [L243] COND TRUE m_i == 1 [L244] m_st = 0 [L248] COND TRUE t1_i == 1 [L249] t1_st = 0 [L253] COND TRUE t2_i == 1 [L254] t2_st = 0 [L559] RET init_threads() [L560] 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] [L356] COND FALSE !(M_E == 0) [L361] COND FALSE !(T1_E == 0) [L366] COND FALSE !(T2_E == 0) [L371] COND FALSE !(E_M == 0) [L376] COND FALSE !(E_1 == 0) [L381] COND FALSE !(E_2 == 0) [L560] 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] [L561] 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] [L429] int tmp ; [L430] int tmp___0 ; [L431] int tmp___1 ; [L435] CALL, EXPR is_master_triggered() [L175] 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] [L178] 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] [L188] __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] [L190] return (__retres1); [L435] RET, EXPR is_master_triggered() [L435] tmp = is_master_triggered() [L437] COND FALSE !(\read(tmp)) [L443] CALL, EXPR is_transmit1_triggered() [L194] 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] [L197] 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] [L207] __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] [L209] return (__retres1); [L443] RET, EXPR is_transmit1_triggered() [L443] tmp___0 = is_transmit1_triggered() [L445] COND FALSE !(\read(tmp___0)) [L451] CALL, EXPR is_transmit2_triggered() [L213] 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] [L216] 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] [L226] __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] [L228] return (__retres1); [L451] RET, EXPR is_transmit2_triggered() [L451] tmp___1 = is_transmit2_triggered() [L453] COND FALSE !(\read(tmp___1)) [L561] 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] [L562] 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] [L394] COND FALSE !(M_E == 1) [L399] COND FALSE !(T1_E == 1) [L404] COND FALSE !(T2_E == 1) [L409] COND FALSE !(E_M == 1) [L414] COND FALSE !(E_1 == 1) [L419] COND FALSE !(E_2 == 1) [L562] 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] [L565] COND TRUE 1 [L568] kernel_st = 1 [L569] CALL eval() [L289] 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] [L293] 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] [L296] 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] [L263] int __retres1 ; [L266] COND TRUE m_st == 0 [L267] __retres1 = 1 [L284] return (__retres1); [L296] 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] [L296] tmp = exists_runnable_thread() [L298] 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] [L303] COND TRUE m_st == 0 [L304] int tmp_ndt_1; [L305] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L306] 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] [L303-L314] { 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] [L317] COND TRUE t1_st == 0 [L318] int tmp_ndt_2; [L319] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L320] COND TRUE, EXPR \read(tmp_ndt_2) [L322] EXPR t1_st = 1 [L323] CALL, EXPR transmit1() [L106] 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] [L117] COND TRUE 1 [L119] t1_pc = 1 [L120] t1_st = 2 [L323] RET, EXPR transmit1() [L317-L328] { 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] [L331] COND TRUE t2_st == 0 [L332] int tmp_ndt_3; [L333] EXPR tmp_ndt_3 = __VERIFIER_nondet_int() [L334] 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] [L331-L342] { 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] [L293] 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] [L296] 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] [L263] int __retres1 ; [L266] COND TRUE m_st == 0 [L267] __retres1 = 1 [L284] return (__retres1); [L296] 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] [L296] tmp = exists_runnable_thread() [L298] 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] [L303] COND TRUE m_st == 0 [L304] int tmp_ndt_1; [L305] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L306] COND TRUE, EXPR \read(tmp_ndt_1) [L308] EXPR m_st = 1 [L309] CALL, EXPR master() [L48] int tmp_var = __VERIFIER_nondet_int(); [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, tmp_var=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, tmp_var=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] [L467] 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] [L429] int tmp ; [L430] int tmp___0 ; [L431] int tmp___1 ; [L435] CALL, EXPR is_master_triggered() [L175] 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] [L178] 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] [L188] __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] [L190] return (__retres1); [L435] RET, EXPR is_master_triggered() [L435] tmp = is_master_triggered() [L437] COND FALSE !(\read(tmp)) [L443] CALL, EXPR is_transmit1_triggered() [L194] 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] [L197] 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] [L198] COND TRUE E_1 == 1 [L199] __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] [L209] return (__retres1); [L443] RET, EXPR is_transmit1_triggered() [L443] tmp___0 = is_transmit1_triggered() [L445] COND TRUE \read(tmp___0) [L446] t1_st = 0 [L451] CALL, EXPR is_transmit2_triggered() [L213] 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] [L216] 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] [L226] __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] [L228] return (__retres1); [L451] RET, EXPR is_transmit2_triggered() [L451] tmp___1 = is_transmit2_triggered() [L453] COND FALSE !(\read(tmp___1)) [L467] 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, tmp_var=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, tmp_var=0, token=2147483647] [L309] RET, EXPR master() [L303-L314] { 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] [L317] COND TRUE t1_st == 0 [L318] int tmp_ndt_2; [L319] tmp_ndt_2 = __VERIFIER_nondet_int() [L320] COND TRUE \read(tmp_ndt_2) [L322] t1_st = 1 [L323] CALL transmit1() [L106] 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] [L109] 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] [L125] 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: 125]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 161]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 161]: 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 8 procedures, 98 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 10.4s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1942 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1908 mSDsluCounter, 3445 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1747 mSDsCounter, 400 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1123 IncrementalHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 400 mSolverCounterUnsat, 1698 mSDtfsCounter, 1123 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 420 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2558occurred in iteration=13, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 868 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1124 NumberOfCodeBlocks, 1124 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1031 ConstructedInterpolants, 0 QuantifiedInterpolants, 2010 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1488 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 18 InterpolantComputations, 13 PerfectInterpolantSequences, 210/244 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! [2023-11-24 23:56:58,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754a3b9d-c5f8-485b-9752-a670d19ba927/bin/utaipan-verify-SwPr7d2a91/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)