./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-tiling/nr5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/nr5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a05e17fa6f76d5004d5085f0b83441da7dbecb194f05c3b661e69c00b5f4df0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:38:58,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:38:58,109 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-21 19:38:58,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:38:58,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:38:58,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:38:58,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:38:58,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:38:58,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:38:58,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:38:58,146 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:38:58,147 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:38:58,148 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:38:58,148 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:38:58,149 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:38:58,149 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:38:58,150 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:38:58,151 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:38:58,151 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:38:58,152 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:38:58,152 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:38:58,153 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:38:58,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:38:58,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:38:58,155 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:38:58,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:38:58,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:38:58,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:38:58,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:38:58,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:38:58,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:38:58,158 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 19:38:58,158 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:38:58,159 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:38:58,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:38:58,160 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:38:58,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:38:58,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:38:58,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:38:58,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:38:58,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:38:58,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:38:58,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:38:58,164 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:38:58,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:38:58,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:38:58,165 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:38:58,166 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:38:58,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:38:58,166 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_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a05e17fa6f76d5004d5085f0b83441da7dbecb194f05c3b661e69c00b5f4df0 [2023-11-21 19:38:58,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:38:58,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:38:58,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:38:58,522 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:38:58,523 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:38:58,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/array-tiling/nr5.c [2023-11-21 19:39:01,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:39:01,844 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:39:01,845 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/sv-benchmarks/c/array-tiling/nr5.c [2023-11-21 19:39:01,853 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/data/f36b7e9f9/0d62a3bec0f840019a4fa5f9394d3f24/FLAG3773ac8d3 [2023-11-21 19:39:01,869 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/data/f36b7e9f9/0d62a3bec0f840019a4fa5f9394d3f24 [2023-11-21 19:39:01,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:39:01,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:39:01,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:39:01,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:39:01,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:39:01,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:39:01" (1/1) ... [2023-11-21 19:39:01,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698e039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:01, skipping insertion in model container [2023-11-21 19:39:01,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:39:01" (1/1) ... [2023-11-21 19:39:01,909 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:39:02,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:39:02,099 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:39:02,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:39:02,136 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:39:02,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02 WrapperNode [2023-11-21 19:39:02,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:39:02,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:39:02,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:39:02,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:39:02,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (1/1) ... [2023-11-21 19:39:02,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (1/1) ... [2023-11-21 19:39:02,186 INFO L138 Inliner]: procedures = 15, calls = 23, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 98 [2023-11-21 19:39:02,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:39:02,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:39:02,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:39:02,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:39:02,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (1/1) ... [2023-11-21 19:39:02,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (1/1) ... [2023-11-21 19:39:02,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (1/1) ... [2023-11-21 19:39:02,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (1/1) ... [2023-11-21 19:39:02,206 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (1/1) ... [2023-11-21 19:39:02,210 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (1/1) ... [2023-11-21 19:39:02,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (1/1) ... [2023-11-21 19:39:02,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (1/1) ... [2023-11-21 19:39:02,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:39:02,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:39:02,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:39:02,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:39:02,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (1/1) ... [2023-11-21 19:39:02,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:39:02,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:02,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:39:02,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:39:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:39:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:39:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:39:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:39:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:39:02,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:39:02,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:39:02,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:39:02,389 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:39:02,391 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:39:02,671 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:39:02,788 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:39:02,789 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 19:39:02,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:39:02 BoogieIcfgContainer [2023-11-21 19:39:02,794 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:39:02,797 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:39:02,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:39:02,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:39:02,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:39:01" (1/3) ... [2023-11-21 19:39:02,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d516100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:39:02, skipping insertion in model container [2023-11-21 19:39:02,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:39:02" (2/3) ... [2023-11-21 19:39:02,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d516100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:39:02, skipping insertion in model container [2023-11-21 19:39:02,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:39:02" (3/3) ... [2023-11-21 19:39:02,809 INFO L112 eAbstractionObserver]: Analyzing ICFG nr5.c [2023-11-21 19:39:02,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:39:02,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-21 19:39:02,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:39:02,903 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;@78c4330c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:39:02,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-21 19:39:02,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:39:02,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:02,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:39:02,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:02,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:02,925 INFO L85 PathProgramCache]: Analyzing trace with hash 4566848, now seen corresponding path program 1 times [2023-11-21 19:39:02,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:02,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503568670] [2023-11-21 19:39:02,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:02,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:03,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:03,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:03,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503568670] [2023-11-21 19:39:03,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503568670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:03,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:03,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:39:03,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279582273] [2023-11-21 19:39:03,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:03,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:39:03,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:03,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:39:03,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:03,434 INFO L87 Difference]: Start difference. First operand has 44 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:03,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:03,520 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2023-11-21 19:39:03,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:39:03,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:39:03,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:03,531 INFO L225 Difference]: With dead ends: 58 [2023-11-21 19:39:03,531 INFO L226 Difference]: Without dead ends: 40 [2023-11-21 19:39:03,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:03,540 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 87 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:03,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 38 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:39:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-21 19:39:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-21 19:39:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.72) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-11-21 19:39:03,578 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 4 [2023-11-21 19:39:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:03,579 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-11-21 19:39:03,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-11-21 19:39:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:39:03,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:03,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:39:03,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:39:03,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:03,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:03,581 INFO L85 PathProgramCache]: Analyzing trace with hash 141572342, now seen corresponding path program 1 times [2023-11-21 19:39:03,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:03,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622311042] [2023-11-21 19:39:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:03,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:03,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622311042] [2023-11-21 19:39:03,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622311042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:03,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:03,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:39:03,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930626750] [2023-11-21 19:39:03,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:03,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:39:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:03,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:39:03,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:39:03,819 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:03,847 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2023-11-21 19:39:03,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:39:03,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-21 19:39:03,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:03,849 INFO L225 Difference]: With dead ends: 40 [2023-11-21 19:39:03,849 INFO L226 Difference]: Without dead ends: 39 [2023-11-21 19:39:03,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:39:03,852 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:03,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 33 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:39:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-21 19:39:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-21 19:39:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.68) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-11-21 19:39:03,866 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 5 [2023-11-21 19:39:03,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:03,866 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-11-21 19:39:03,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:03,868 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-11-21 19:39:03,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:39:03,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:03,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:03,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:39:03,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:03,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:03,881 INFO L85 PathProgramCache]: Analyzing trace with hash -76182515, now seen corresponding path program 1 times [2023-11-21 19:39:03,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:03,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461529948] [2023-11-21 19:39:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:03,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:03,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:03,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461529948] [2023-11-21 19:39:03,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461529948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:03,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:03,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:39:03,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389086917] [2023-11-21 19:39:03,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:03,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:39:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:39:03,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:39:03,986 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:04,054 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2023-11-21 19:39:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:39:04,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-21 19:39:04,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:04,056 INFO L225 Difference]: With dead ends: 98 [2023-11-21 19:39:04,056 INFO L226 Difference]: Without dead ends: 62 [2023-11-21 19:39:04,056 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 [2023-11-21 19:39:04,058 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:04,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 49 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:39:04,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-21 19:39:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 40. [2023-11-21 19:39:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-11-21 19:39:04,067 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 8 [2023-11-21 19:39:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:04,067 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-11-21 19:39:04,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,068 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-11-21 19:39:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:39:04,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:04,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:04,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:39:04,078 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:04,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:04,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1933203850, now seen corresponding path program 1 times [2023-11-21 19:39:04,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:04,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442511560] [2023-11-21 19:39:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:04,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:04,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:04,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442511560] [2023-11-21 19:39:04,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442511560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:04,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:04,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:39:04,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384814340] [2023-11-21 19:39:04,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:04,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:39:04,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:04,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:39:04,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:04,218 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:04,276 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2023-11-21 19:39:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:39:04,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 19:39:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:04,278 INFO L225 Difference]: With dead ends: 45 [2023-11-21 19:39:04,278 INFO L226 Difference]: Without dead ends: 43 [2023-11-21 19:39:04,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:39:04,280 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:04,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 86 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:39:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-21 19:39:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-21 19:39:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2023-11-21 19:39:04,288 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 9 [2023-11-21 19:39:04,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:04,289 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2023-11-21 19:39:04,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,289 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2023-11-21 19:39:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:39:04,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:04,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:04,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:39:04,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:04,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:04,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1933223264, now seen corresponding path program 1 times [2023-11-21 19:39:04,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:04,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260912571] [2023-11-21 19:39:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:04,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:04,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:04,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260912571] [2023-11-21 19:39:04,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260912571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:04,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:04,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:39:04,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922740830] [2023-11-21 19:39:04,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:04,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:39:04,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:04,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:39:04,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:04,359 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:04,419 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2023-11-21 19:39:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:39:04,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 19:39:04,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:04,421 INFO L225 Difference]: With dead ends: 97 [2023-11-21 19:39:04,421 INFO L226 Difference]: Without dead ends: 57 [2023-11-21 19:39:04,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:04,423 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 50 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:04,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 53 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:39:04,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-21 19:39:04,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2023-11-21 19:39:04,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2023-11-21 19:39:04,431 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 9 [2023-11-21 19:39:04,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:04,431 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2023-11-21 19:39:04,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2023-11-21 19:39:04,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:39:04,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:04,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:04,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:39:04,439 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:04,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1933222944, now seen corresponding path program 1 times [2023-11-21 19:39:04,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:04,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177752492] [2023-11-21 19:39:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:04,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:04,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:04,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177752492] [2023-11-21 19:39:04,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177752492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:04,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:04,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:39:04,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232312848] [2023-11-21 19:39:04,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:04,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:39:04,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:04,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:39:04,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:39:04,518 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:04,598 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2023-11-21 19:39:04,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:39:04,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 19:39:04,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:04,603 INFO L225 Difference]: With dead ends: 77 [2023-11-21 19:39:04,603 INFO L226 Difference]: Without dead ends: 73 [2023-11-21 19:39:04,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:39:04,612 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:04,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 40 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:39:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-21 19:39:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2023-11-21 19:39:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 61 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2023-11-21 19:39:04,638 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 9 [2023-11-21 19:39:04,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:04,639 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2023-11-21 19:39:04,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2023-11-21 19:39:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:39:04,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:04,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:04,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:39:04,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:04,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1893587614, now seen corresponding path program 1 times [2023-11-21 19:39:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28737795] [2023-11-21 19:39:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:04,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28737795] [2023-11-21 19:39:04,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28737795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:04,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:04,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:39:04,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787326156] [2023-11-21 19:39:04,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:04,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:39:04,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:04,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:39:04,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:04,743 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:04,835 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2023-11-21 19:39:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:39:04,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-21 19:39:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:04,839 INFO L225 Difference]: With dead ends: 84 [2023-11-21 19:39:04,840 INFO L226 Difference]: Without dead ends: 82 [2023-11-21 19:39:04,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:04,843 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:04,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 45 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:39:04,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-21 19:39:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2023-11-21 19:39:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 52 states have (on average 1.5) internal successors, (78), 65 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2023-11-21 19:39:04,867 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 11 [2023-11-21 19:39:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:04,868 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2023-11-21 19:39:04,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2023-11-21 19:39:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:39:04,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:04,869 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:04,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:39:04,869 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:04,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:04,870 INFO L85 PathProgramCache]: Analyzing trace with hash 859561155, now seen corresponding path program 1 times [2023-11-21 19:39:04,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:04,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131427637] [2023-11-21 19:39:04,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:04,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:39:05,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131427637] [2023-11-21 19:39:05,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131427637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:05,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:05,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:39:05,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114180873] [2023-11-21 19:39:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:05,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:39:05,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:39:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:05,179 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:05,274 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2023-11-21 19:39:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:39:05,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-21 19:39:05,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:05,276 INFO L225 Difference]: With dead ends: 85 [2023-11-21 19:39:05,276 INFO L226 Difference]: Without dead ends: 76 [2023-11-21 19:39:05,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:05,278 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 90 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:05,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 36 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:39:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-21 19:39:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2023-11-21 19:39:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 65 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:05,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2023-11-21 19:39:05,303 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 12 [2023-11-21 19:39:05,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:05,304 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2023-11-21 19:39:05,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2023-11-21 19:39:05,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 19:39:05,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:05,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:05,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 19:39:05,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:05,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1768065170, now seen corresponding path program 1 times [2023-11-21 19:39:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:05,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845460769] [2023-11-21 19:39:05,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:05,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:05,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:05,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845460769] [2023-11-21 19:39:05,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845460769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:05,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:05,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:39:05,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094676939] [2023-11-21 19:39:05,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:05,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:39:05,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:39:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:05,391 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:05,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:05,451 INFO L93 Difference]: Finished difference Result 82 states and 95 transitions. [2023-11-21 19:39:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:39:05,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-21 19:39:05,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:05,453 INFO L225 Difference]: With dead ends: 82 [2023-11-21 19:39:05,453 INFO L226 Difference]: Without dead ends: 80 [2023-11-21 19:39:05,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:39:05,455 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:05,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 83 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:39:05,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-21 19:39:05,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2023-11-21 19:39:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 62 states have (on average 1.467741935483871) internal successors, (91), 75 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2023-11-21 19:39:05,463 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 14 [2023-11-21 19:39:05,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:05,463 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2023-11-21 19:39:05,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:05,463 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2023-11-21 19:39:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 19:39:05,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:05,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:05,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 19:39:05,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:05,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:05,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1049533944, now seen corresponding path program 1 times [2023-11-21 19:39:05,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:05,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555003100] [2023-11-21 19:39:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:05,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:39:05,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:05,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555003100] [2023-11-21 19:39:05,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555003100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:05,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:39:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965001065] [2023-11-21 19:39:05,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:05,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:39:05,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:05,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:39:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:05,526 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:05,604 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2023-11-21 19:39:05,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:39:05,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-21 19:39:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:05,606 INFO L225 Difference]: With dead ends: 86 [2023-11-21 19:39:05,606 INFO L226 Difference]: Without dead ends: 84 [2023-11-21 19:39:05,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:39:05,607 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:05,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 60 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:39:05,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-21 19:39:05,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2023-11-21 19:39:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 64 states have (on average 1.453125) internal successors, (93), 77 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 93 transitions. [2023-11-21 19:39:05,631 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 93 transitions. Word has length 17 [2023-11-21 19:39:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:05,631 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 93 transitions. [2023-11-21 19:39:05,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2023-11-21 19:39:05,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-21 19:39:05,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:05,633 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:05,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 19:39:05,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:05,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:05,634 INFO L85 PathProgramCache]: Analyzing trace with hash -778896873, now seen corresponding path program 1 times [2023-11-21 19:39:05,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:05,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749904083] [2023-11-21 19:39:05,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:05,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:05,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:05,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749904083] [2023-11-21 19:39:05,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749904083] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:39:05,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219276717] [2023-11-21 19:39:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:05,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:05,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:05,761 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:39:05,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:39:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:05,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:39:05,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:39:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:05,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:39:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:06,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219276717] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:39:06,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626393403] [2023-11-21 19:39:06,037 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-11-21 19:39:06,037 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:39:06,041 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:39:06,048 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:39:06,048 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:39:08,253 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:39:09,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1626393403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:09,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:39:09,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 6, 6] total 24 [2023-11-21 19:39:09,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351931877] [2023-11-21 19:39:09,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:09,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 19:39:09,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:09,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 19:39:09,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=424, Unknown=3, NotChecked=0, Total=552 [2023-11-21 19:39:09,351 INFO L87 Difference]: Start difference. First operand 78 states and 93 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:11,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:11,044 INFO L93 Difference]: Finished difference Result 156 states and 181 transitions. [2023-11-21 19:39:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 19:39:11,045 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-21 19:39:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:11,046 INFO L225 Difference]: With dead ends: 156 [2023-11-21 19:39:11,046 INFO L226 Difference]: Without dead ends: 106 [2023-11-21 19:39:11,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=227, Invalid=700, Unknown=3, NotChecked=0, Total=930 [2023-11-21 19:39:11,048 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 199 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:11,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 56 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 19:39:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-21 19:39:11,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2023-11-21 19:39:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 83 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:11,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2023-11-21 19:39:11,062 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 20 [2023-11-21 19:39:11,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:11,062 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2023-11-21 19:39:11,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:11,062 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2023-11-21 19:39:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 19:39:11,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:11,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:11,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:39:11,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-21 19:39:11,280 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:11,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1591644195, now seen corresponding path program 1 times [2023-11-21 19:39:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:11,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734671114] [2023-11-21 19:39:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:39:11,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:11,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734671114] [2023-11-21 19:39:11,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734671114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:11,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:11,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:39:11,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088080873] [2023-11-21 19:39:11,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:11,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:39:11,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:11,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:39:11,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:11,332 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:11,380 INFO L93 Difference]: Finished difference Result 84 states and 99 transitions. [2023-11-21 19:39:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:39:11,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-21 19:39:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:11,382 INFO L225 Difference]: With dead ends: 84 [2023-11-21 19:39:11,382 INFO L226 Difference]: Without dead ends: 83 [2023-11-21 19:39:11,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:39:11,383 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:11,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 56 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:39:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-21 19:39:11,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-21 19:39:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 82 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2023-11-21 19:39:11,395 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 23 [2023-11-21 19:39:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:11,395 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2023-11-21 19:39:11,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:11,395 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2023-11-21 19:39:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 19:39:11,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:11,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:11,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 19:39:11,397 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:11,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:11,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2096329883, now seen corresponding path program 1 times [2023-11-21 19:39:11,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:11,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612108141] [2023-11-21 19:39:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:11,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:11,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612108141] [2023-11-21 19:39:11,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612108141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:39:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257194545] [2023-11-21 19:39:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:11,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:11,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:11,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:39:11,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:39:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:11,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:39:11,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:39:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:11,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:39:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:39:11,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257194545] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:39:11,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [835562548] [2023-11-21 19:39:11,703 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-11-21 19:39:11,703 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:39:11,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:39:11,704 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:39:11,704 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:39:13,567 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:39:14,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [835562548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:14,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:39:14,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 6, 6] total 24 [2023-11-21 19:39:14,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134569379] [2023-11-21 19:39:14,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:14,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 19:39:14,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:14,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 19:39:14,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-11-21 19:39:14,812 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:16,480 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2023-11-21 19:39:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 19:39:16,481 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-21 19:39:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:16,482 INFO L225 Difference]: With dead ends: 90 [2023-11-21 19:39:16,482 INFO L226 Difference]: Without dead ends: 86 [2023-11-21 19:39:16,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2023-11-21 19:39:16,483 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 123 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:16,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 53 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 19:39:16,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-21 19:39:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2023-11-21 19:39:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 78 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2023-11-21 19:39:16,496 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 24 [2023-11-21 19:39:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:16,496 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2023-11-21 19:39:16,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2023-11-21 19:39:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 19:39:16,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:16,498 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:16,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:39:16,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 19:39:16,719 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:16,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:16,719 INFO L85 PathProgramCache]: Analyzing trace with hash -245621489, now seen corresponding path program 1 times [2023-11-21 19:39:16,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:16,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040447348] [2023-11-21 19:39:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:16,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 19:39:16,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:16,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040447348] [2023-11-21 19:39:16,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040447348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:39:16,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853053420] [2023-11-21 19:39:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:16,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:16,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:16,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:39:16,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:39:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:16,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:39:16,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:39:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:39:16,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:39:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:39:17,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853053420] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:39:17,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1157969858] [2023-11-21 19:39:17,050 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-21 19:39:17,051 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:39:17,051 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:39:17,051 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:39:17,051 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:39:20,018 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:39:21,820 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2703#(and (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 5) (<= |ULTIMATE.start_main_~MINVAL~0#1| |ULTIMATE.start_main_~j~0#1|) (<= (+ 429496730 |ULTIMATE.start_main_~i~0#1|) 0))' at error location [2023-11-21 19:39:21,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:39:21,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:39:21,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 13 [2023-11-21 19:39:21,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208721653] [2023-11-21 19:39:21,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:39:21,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 19:39:21,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 19:39:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=807, Unknown=1, NotChecked=0, Total=930 [2023-11-21 19:39:21,824 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:22,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:22,551 INFO L93 Difference]: Finished difference Result 257 states and 298 transitions. [2023-11-21 19:39:22,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-21 19:39:22,552 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-21 19:39:22,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:22,554 INFO L225 Difference]: With dead ends: 257 [2023-11-21 19:39:22,555 INFO L226 Difference]: Without dead ends: 195 [2023-11-21 19:39:22,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 67 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=367, Invalid=2284, Unknown=1, NotChecked=0, Total=2652 [2023-11-21 19:39:22,558 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 375 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:22,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 190 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 19:39:22,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-21 19:39:22,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 144. [2023-11-21 19:39:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 131 states have (on average 1.3587786259541985) internal successors, (178), 143 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 178 transitions. [2023-11-21 19:39:22,587 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 178 transitions. Word has length 33 [2023-11-21 19:39:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:22,588 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 178 transitions. [2023-11-21 19:39:22,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 178 transitions. [2023-11-21 19:39:22,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 19:39:22,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:22,590 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:22,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:39:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-21 19:39:22,813 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:22,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1500134021, now seen corresponding path program 1 times [2023-11-21 19:39:22,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:22,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390805191] [2023-11-21 19:39:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-21 19:39:23,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:23,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390805191] [2023-11-21 19:39:23,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390805191] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:39:23,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625948183] [2023-11-21 19:39:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:23,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:23,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:23,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:39:23,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:39:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:23,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 19:39:23,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:39:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:39:23,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:39:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:39:23,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625948183] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:39:23,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1243988417] [2023-11-21 19:39:23,493 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-21 19:39:23,493 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:39:23,493 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:39:23,494 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:39:23,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:39:26,154 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:39:27,937 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3535#(and (<= 429496730 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 5) (<= |ULTIMATE.start_main_~MINVAL~0#1| |ULTIMATE.start_main_~j~0#1|))' at error location [2023-11-21 19:39:27,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:39:27,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:39:27,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10, 10] total 20 [2023-11-21 19:39:27,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941207659] [2023-11-21 19:39:27,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:39:27,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-21 19:39:27,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:27,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-21 19:39:27,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1244, Unknown=2, NotChecked=0, Total=1406 [2023-11-21 19:39:27,941 INFO L87 Difference]: Start difference. First operand 144 states and 178 transitions. Second operand has 20 states, 20 states have (on average 5.55) internal successors, (111), 20 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:28,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:28,957 INFO L93 Difference]: Finished difference Result 348 states and 407 transitions. [2023-11-21 19:39:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-21 19:39:28,957 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.55) internal successors, (111), 20 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-21 19:39:28,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:28,959 INFO L225 Difference]: With dead ends: 348 [2023-11-21 19:39:28,959 INFO L226 Difference]: Without dead ends: 239 [2023-11-21 19:39:28,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 116 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1808 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=732, Invalid=4096, Unknown=2, NotChecked=0, Total=4830 [2023-11-21 19:39:28,964 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 292 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:28,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 140 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 19:39:28,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-21 19:39:28,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 175. [2023-11-21 19:39:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 162 states have (on average 1.2901234567901234) internal successors, (209), 174 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 209 transitions. [2023-11-21 19:39:28,993 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 209 transitions. Word has length 52 [2023-11-21 19:39:28,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:28,993 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 209 transitions. [2023-11-21 19:39:28,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.55) internal successors, (111), 20 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 209 transitions. [2023-11-21 19:39:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-21 19:39:28,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:28,995 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:29,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 19:39:29,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:29,212 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:29,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:29,213 INFO L85 PathProgramCache]: Analyzing trace with hash -825198042, now seen corresponding path program 1 times [2023-11-21 19:39:29,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:29,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651916968] [2023-11-21 19:39:29,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:29,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-21 19:39:29,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:29,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651916968] [2023-11-21 19:39:29,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651916968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:39:29,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602578927] [2023-11-21 19:39:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:29,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:29,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:29,448 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:39:29,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 19:39:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:29,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:39:29,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:39:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-21 19:39:29,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:39:29,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602578927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:29,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:39:29,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-21 19:39:29,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061495012] [2023-11-21 19:39:29,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:29,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:39:29,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:29,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:39:29,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:39:29,649 INFO L87 Difference]: Start difference. First operand 175 states and 209 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:29,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:29,812 INFO L93 Difference]: Finished difference Result 179 states and 210 transitions. [2023-11-21 19:39:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:39:29,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-21 19:39:29,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:29,815 INFO L225 Difference]: With dead ends: 179 [2023-11-21 19:39:29,815 INFO L226 Difference]: Without dead ends: 175 [2023-11-21 19:39:29,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:39:29,816 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 45 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:29,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 67 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:39:29,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-21 19:39:29,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 172. [2023-11-21 19:39:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 162 states have (on average 1.2407407407407407) internal successors, (201), 171 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 201 transitions. [2023-11-21 19:39:29,846 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 201 transitions. Word has length 62 [2023-11-21 19:39:29,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:29,847 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 201 transitions. [2023-11-21 19:39:29,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:29,847 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 201 transitions. [2023-11-21 19:39:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-21 19:39:29,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:29,848 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:29,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-21 19:39:30,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-21 19:39:30,064 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:30,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash -380100481, now seen corresponding path program 1 times [2023-11-21 19:39:30,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:30,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629423635] [2023-11-21 19:39:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-21 19:39:30,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629423635] [2023-11-21 19:39:30,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629423635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:39:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391592195] [2023-11-21 19:39:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:30,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:30,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:30,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:39:30,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 19:39:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:30,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:39:30,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:39:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-21 19:39:30,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:39:30,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391592195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:30,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:39:30,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-21 19:39:30,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816740274] [2023-11-21 19:39:30,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:30,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:39:30,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:30,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:39:30,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:39:30,411 INFO L87 Difference]: Start difference. First operand 172 states and 201 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:30,528 INFO L93 Difference]: Finished difference Result 172 states and 201 transitions. [2023-11-21 19:39:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:39:30,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-21 19:39:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:30,532 INFO L225 Difference]: With dead ends: 172 [2023-11-21 19:39:30,532 INFO L226 Difference]: Without dead ends: 171 [2023-11-21 19:39:30,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-21 19:39:30,533 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:30,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 85 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:39:30,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-21 19:39:30,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-11-21 19:39:30,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 162 states have (on average 1.2345679012345678) internal successors, (200), 170 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:30,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 200 transitions. [2023-11-21 19:39:30,558 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 200 transitions. Word has length 63 [2023-11-21 19:39:30,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:30,559 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 200 transitions. [2023-11-21 19:39:30,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:30,559 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 200 transitions. [2023-11-21 19:39:30,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-21 19:39:30,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:30,561 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:30,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 19:39:30,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-21 19:39:30,776 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:30,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:30,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1101787115, now seen corresponding path program 1 times [2023-11-21 19:39:30,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:30,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490255319] [2023-11-21 19:39:30,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:30,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-21 19:39:30,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:30,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490255319] [2023-11-21 19:39:30,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490255319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:39:30,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174031785] [2023-11-21 19:39:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:30,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:30,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:30,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:39:30,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 19:39:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:30,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:39:31,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:39:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-21 19:39:31,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:39:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-21 19:39:31,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174031785] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:39:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [432574837] [2023-11-21 19:39:31,079 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-21 19:39:31,079 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:39:31,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:39:31,080 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:39:31,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:39:34,166 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:39:36,704 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5757#(and (<= 1 |#StackHeapBarrier|) (<= 2 ~CELLCOUNT~0) (= 2 |ULTIMATE.start_main_~MINVAL~0#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (<= ~CELLCOUNT~0 2147483647) (= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= 1 |ULTIMATE.start_main_~DEFAULTVALUE~0#1|) (<= 2 |ULTIMATE.start_main_~#volArray~0#1.base|))' at error location [2023-11-21 19:39:36,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:39:36,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:39:36,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-21 19:39:36,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612244023] [2023-11-21 19:39:36,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:39:36,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 19:39:36,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:36,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 19:39:36,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2023-11-21 19:39:36,707 INFO L87 Difference]: Start difference. First operand 171 states and 200 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:36,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:36,920 INFO L93 Difference]: Finished difference Result 182 states and 212 transitions. [2023-11-21 19:39:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 19:39:36,921 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-21 19:39:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:36,922 INFO L225 Difference]: With dead ends: 182 [2023-11-21 19:39:36,922 INFO L226 Difference]: Without dead ends: 181 [2023-11-21 19:39:36,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 155 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=165, Invalid=891, Unknown=0, NotChecked=0, Total=1056 [2023-11-21 19:39:36,924 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 119 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:36,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 86 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:39:36,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-21 19:39:36,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2023-11-21 19:39:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 171 states have (on average 1.2222222222222223) internal successors, (209), 179 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 209 transitions. [2023-11-21 19:39:36,956 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 209 transitions. Word has length 64 [2023-11-21 19:39:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:36,956 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 209 transitions. [2023-11-21 19:39:36,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 209 transitions. [2023-11-21 19:39:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-21 19:39:36,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:36,958 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:36,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 19:39:37,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-21 19:39:37,180 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:37,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:37,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1996033875, now seen corresponding path program 2 times [2023-11-21 19:39:37,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:37,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454561184] [2023-11-21 19:39:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:37,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 65 proven. 5 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-21 19:39:37,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:37,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454561184] [2023-11-21 19:39:37,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454561184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:39:37,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466860325] [2023-11-21 19:39:37,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 19:39:37,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:37,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:37,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:39:37,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 19:39:37,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-21 19:39:37,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:39:37,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 19:39:37,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:39:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-21 19:39:37,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:39:37,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466860325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:37,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:39:37,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-21 19:39:37,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129029846] [2023-11-21 19:39:37,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:37,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:39:37,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:37,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:39:37,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-21 19:39:37,637 INFO L87 Difference]: Start difference. First operand 180 states and 209 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:37,780 INFO L93 Difference]: Finished difference Result 181 states and 210 transitions. [2023-11-21 19:39:37,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:39:37,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-21 19:39:37,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:37,782 INFO L225 Difference]: With dead ends: 181 [2023-11-21 19:39:37,782 INFO L226 Difference]: Without dead ends: 179 [2023-11-21 19:39:37,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-21 19:39:37,784 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:37,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 56 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:39:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-21 19:39:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2023-11-21 19:39:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 171 states have (on average 1.1695906432748537) internal successors, (200), 177 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 200 transitions. [2023-11-21 19:39:37,817 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 200 transitions. Word has length 71 [2023-11-21 19:39:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:37,818 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 200 transitions. [2023-11-21 19:39:37,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 200 transitions. [2023-11-21 19:39:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-21 19:39:37,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:37,820 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:37,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 19:39:38,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:38,044 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:38,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:38,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1545572804, now seen corresponding path program 2 times [2023-11-21 19:39:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:38,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342331653] [2023-11-21 19:39:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:38,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:38,373 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-21 19:39:38,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:38,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342331653] [2023-11-21 19:39:38,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342331653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:39:38,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079971712] [2023-11-21 19:39:38,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 19:39:38,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:38,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:38,375 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:39:38,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 19:39:38,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-21 19:39:38,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:39:38,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:39:38,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:39:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-21 19:39:38,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:39:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-21 19:39:38,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079971712] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:39:38,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1806613714] [2023-11-21 19:39:38,725 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-21 19:39:38,725 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:39:38,726 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:39:38,726 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:39:38,726 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:39:41,689 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:39:43,908 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7269#(and (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (<= 1 ~CELLCOUNT~0) (<= 0 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-21 19:39:43,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:39:43,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:39:43,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2023-11-21 19:39:43,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240526088] [2023-11-21 19:39:43,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:39:43,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 19:39:43,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 19:39:43,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2023-11-21 19:39:43,911 INFO L87 Difference]: Start difference. First operand 178 states and 200 transitions. Second operand has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:44,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:44,195 INFO L93 Difference]: Finished difference Result 181 states and 204 transitions. [2023-11-21 19:39:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 19:39:44,196 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-11-21 19:39:44,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:44,197 INFO L225 Difference]: With dead ends: 181 [2023-11-21 19:39:44,197 INFO L226 Difference]: Without dead ends: 161 [2023-11-21 19:39:44,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 184 SyntacticMatches, 16 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=271, Invalid=1451, Unknown=0, NotChecked=0, Total=1722 [2023-11-21 19:39:44,199 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 83 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:44,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 70 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:39:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-21 19:39:44,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-21 19:39:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 155 states have (on average 1.167741935483871) internal successors, (181), 160 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 181 transitions. [2023-11-21 19:39:44,225 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 181 transitions. Word has length 73 [2023-11-21 19:39:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:44,226 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 181 transitions. [2023-11-21 19:39:44,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 181 transitions. [2023-11-21 19:39:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-21 19:39:44,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:44,227 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:44,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 19:39:44,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:44,431 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:44,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:44,431 INFO L85 PathProgramCache]: Analyzing trace with hash 714080289, now seen corresponding path program 1 times [2023-11-21 19:39:44,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:44,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277281231] [2023-11-21 19:39:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:44,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 9 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-21 19:39:44,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:44,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277281231] [2023-11-21 19:39:44,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277281231] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:39:44,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158652561] [2023-11-21 19:39:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:44,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:44,592 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:39:44,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 19:39:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:44,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:39:44,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:39:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-21 19:39:44,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:39:44,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158652561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:44,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:39:44,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-21 19:39:44,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299757894] [2023-11-21 19:39:44,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:44,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:39:44,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:44,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:39:44,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:39:44,748 INFO L87 Difference]: Start difference. First operand 161 states and 181 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:44,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:44,828 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2023-11-21 19:39:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:39:44,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-21 19:39:44,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:44,830 INFO L225 Difference]: With dead ends: 163 [2023-11-21 19:39:44,830 INFO L226 Difference]: Without dead ends: 162 [2023-11-21 19:39:44,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-21 19:39:44,833 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:44,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 43 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:39:44,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-21 19:39:44,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2023-11-21 19:39:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.1290322580645162) internal successors, (175), 159 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2023-11-21 19:39:44,859 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 75 [2023-11-21 19:39:44,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:44,860 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2023-11-21 19:39:44,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:44,860 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2023-11-21 19:39:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-21 19:39:44,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:44,862 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:44,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 19:39:45,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-21 19:39:45,076 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:45,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1792501507, now seen corresponding path program 1 times [2023-11-21 19:39:45,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:45,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207377521] [2023-11-21 19:39:45,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:45,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-21 19:39:45,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:45,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207377521] [2023-11-21 19:39:45,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207377521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:39:45,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:39:45,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:39:45,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280833484] [2023-11-21 19:39:45,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:39:45,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:39:45,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:39:45,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:39:45,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:39:45,183 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:39:45,249 INFO L93 Difference]: Finished difference Result 161 states and 175 transitions. [2023-11-21 19:39:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:39:45,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-11-21 19:39:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:39:45,251 INFO L225 Difference]: With dead ends: 161 [2023-11-21 19:39:45,251 INFO L226 Difference]: Without dead ends: 158 [2023-11-21 19:39:45,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:39:45,255 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:39:45,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:39:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-21 19:39:45,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 145. [2023-11-21 19:39:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 142 states have (on average 1.0774647887323943) internal successors, (153), 144 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2023-11-21 19:39:45,280 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 96 [2023-11-21 19:39:45,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:39:45,281 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2023-11-21 19:39:45,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:39:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2023-11-21 19:39:45,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-21 19:39:45,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:39:45,282 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:39:45,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-21 19:39:45,283 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-21 19:39:45,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:39:45,284 INFO L85 PathProgramCache]: Analyzing trace with hash 643986226, now seen corresponding path program 1 times [2023-11-21 19:39:45,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:39:45,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023631430] [2023-11-21 19:39:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:45,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:39:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-21 19:39:45,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:39:45,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023631430] [2023-11-21 19:39:45,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023631430] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:39:45,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061116688] [2023-11-21 19:39:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:39:45,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:39:45,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:39:45,381 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:39:45,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e9b84e-ccb2-485f-a061-32deff967d0b/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 19:39:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:39:45,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:39:45,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:39:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 4 proven. 186 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-21 19:39:45,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:39:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-21 19:39:45,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061116688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:39:45,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2064390268] [2023-11-21 19:39:45,838 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-21 19:39:45,838 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:39:45,838 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:39:45,839 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:39:45,839 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:39:48,284 INFO L180 IcfgInterpreter]: Interpretation finished