./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:33,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:33,119 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:14:33,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:33,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:33,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:33,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:33,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:33,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:33,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:33,179 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:33,180 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:33,180 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:33,182 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:14:33,182 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:33,183 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:33,183 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:14:33,184 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:14:33,184 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:33,185 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:14:33,185 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:14:33,186 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:14:33,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:33,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:14:33,188 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:14:33,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:14:33,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:14:33,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:33,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:14:33,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:33,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:14:33,192 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:14:33,192 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:14:33,192 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:14:33,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:14:33,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:33,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:33,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:33,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:33,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:33,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:33,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:14:33,211 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:14:33,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:14:33,212 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:14:33,212 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:33,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:33,212 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_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 [2023-11-19 04:14:33,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:33,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:33,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:33,579 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:33,580 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:33,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c [2023-11-19 04:14:36,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:37,033 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:37,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c [2023-11-19 04:14:37,041 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/data/1fea48d2a/212f3e1dd00c43cf90a893e2c1b005b2/FLAG5e5952509 [2023-11-19 04:14:37,056 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/data/1fea48d2a/212f3e1dd00c43cf90a893e2c1b005b2 [2023-11-19 04:14:37,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:37,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:37,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:37,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:37,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:37,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188c1e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37, skipping insertion in model container [2023-11-19 04:14:37,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,092 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:37,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:37,316 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:37,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:37,349 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:37,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37 WrapperNode [2023-11-19 04:14:37,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:37,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:37,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:37,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:37,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,387 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-11-19 04:14:37,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:37,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:37,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:37,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:37,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:37,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:37,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:37,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:37,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (1/1) ... [2023-11-19 04:14:37,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:37,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:37,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:37,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:14:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:14:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:14:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:14:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:14:37,548 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:37,550 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:37,848 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:14:37,882 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:14:37,883 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:14:37,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:37 BoogieIcfgContainer [2023-11-19 04:14:37,888 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:14:37,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:14:37,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:14:37,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:14:37,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:37" (1/3) ... [2023-11-19 04:14:37,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fc6353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:37, skipping insertion in model container [2023-11-19 04:14:37,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:37" (2/3) ... [2023-11-19 04:14:37,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fc6353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:37, skipping insertion in model container [2023-11-19 04:14:37,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:37" (3/3) ... [2023-11-19 04:14:37,899 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound5.c [2023-11-19 04:14:37,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:14:37,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-19 04:14:37,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:14:37,986 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;@7e07f61b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:14:37,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-19 04:14:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 48 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:14:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:14:38,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:38,000 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:38,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:38,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash 688878085, now seen corresponding path program 1 times [2023-11-19 04:14:38,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:38,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514097507] [2023-11-19 04:14:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:38,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:38,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:38,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514097507] [2023-11-19 04:14:38,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 04:14:38,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055176163] [2023-11-19 04:14:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:38,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:38,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:38,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:38,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:14:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:38,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:14:38,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:38,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:38,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055176163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:38,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:38,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:14:38,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002624348] [2023-11-19 04:14:38,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:38,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:14:38,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:38,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:14:38,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:14:38,312 INFO L87 Difference]: Start difference. First operand has 55 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 48 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:38,345 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2023-11-19 04:14:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:14:38,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-11-19 04:14:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:38,357 INFO L225 Difference]: With dead ends: 68 [2023-11-19 04:14:38,357 INFO L226 Difference]: Without dead ends: 52 [2023-11-19 04:14:38,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:14:38,364 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:38,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:14:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-19 04:14:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-19 04:14:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 46 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2023-11-19 04:14:38,410 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 10 [2023-11-19 04:14:38,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:38,411 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2023-11-19 04:14:38,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:38,412 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2023-11-19 04:14:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:14:38,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:38,414 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:38,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:38,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 04:14:38,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:38,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:38,630 INFO L85 PathProgramCache]: Analyzing trace with hash 688874938, now seen corresponding path program 1 times [2023-11-19 04:14:38,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:38,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119058200] [2023-11-19 04:14:38,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:38,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:38,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:38,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466267469] [2023-11-19 04:14:38,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:38,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:38,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:38,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:38,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:14:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:38,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:14:38,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:38,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:38,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:38,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119058200] [2023-11-19 04:14:38,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:38,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466267469] [2023-11-19 04:14:38,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466267469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:38,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:38,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:14:38,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237015589] [2023-11-19 04:14:38,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:38,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:38,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:38,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:38,759 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:38,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:38,862 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2023-11-19 04:14:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:38,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-11-19 04:14:38,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:38,870 INFO L225 Difference]: With dead ends: 92 [2023-11-19 04:14:38,870 INFO L226 Difference]: Without dead ends: 86 [2023-11-19 04:14:38,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:38,873 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:38,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 61 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:14:38,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-19 04:14:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2023-11-19 04:14:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 65 states have internal predecessors, (79), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:14:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2023-11-19 04:14:38,890 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 10 [2023-11-19 04:14:38,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:38,891 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2023-11-19 04:14:38,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:38,892 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2023-11-19 04:14:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:14:38,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:38,894 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:38,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:39,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:39,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:39,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash 583853372, now seen corresponding path program 1 times [2023-11-19 04:14:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:39,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421150866] [2023-11-19 04:14:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:39,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:39,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864661795] [2023-11-19 04:14:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:39,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:39,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:39,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:39,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:14:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:39,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:14:39,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:39,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:39,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:39,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421150866] [2023-11-19 04:14:39,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:39,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864661795] [2023-11-19 04:14:39,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864661795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:39,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:39,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:39,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821891371] [2023-11-19 04:14:39,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:39,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:14:39,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:14:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:14:39,272 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:39,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:39,366 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2023-11-19 04:14:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:14:39,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2023-11-19 04:14:39,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:39,369 INFO L225 Difference]: With dead ends: 75 [2023-11-19 04:14:39,369 INFO L226 Difference]: Without dead ends: 69 [2023-11-19 04:14:39,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:14:39,373 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 64 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:39,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 29 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:14:39,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-19 04:14:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-19 04:14:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 62 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:14:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2023-11-19 04:14:39,395 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 12 [2023-11-19 04:14:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:39,396 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2023-11-19 04:14:39,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2023-11-19 04:14:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 04:14:39,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:39,397 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:39,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:39,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 04:14:39,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:39,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash 919585400, now seen corresponding path program 1 times [2023-11-19 04:14:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:39,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161274709] [2023-11-19 04:14:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:39,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:39,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:39,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514437194] [2023-11-19 04:14:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:39,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:39,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:39,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:39,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:14:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:39,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:14:39,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:39,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:39,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:39,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161274709] [2023-11-19 04:14:39,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:39,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514437194] [2023-11-19 04:14:39,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514437194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:39,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:39,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:39,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850445289] [2023-11-19 04:14:39,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:39,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:14:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:14:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:14:39,734 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:39,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:39,814 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2023-11-19 04:14:39,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:14:39,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-11-19 04:14:39,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:39,817 INFO L225 Difference]: With dead ends: 115 [2023-11-19 04:14:39,818 INFO L226 Difference]: Without dead ends: 104 [2023-11-19 04:14:39,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:14:39,819 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 44 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:39,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 52 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:14:39,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-19 04:14:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2023-11-19 04:14:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4444444444444444) internal successors, (104), 86 states have internal predecessors, (104), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:14:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 116 transitions. [2023-11-19 04:14:39,836 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 116 transitions. Word has length 13 [2023-11-19 04:14:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:39,836 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 116 transitions. [2023-11-19 04:14:39,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:39,837 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 116 transitions. [2023-11-19 04:14:39,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 04:14:39,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:39,838 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:39,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:40,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:40,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:40,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:40,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1557623618, now seen corresponding path program 1 times [2023-11-19 04:14:40,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:40,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849518468] [2023-11-19 04:14:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:40,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:40,078 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:40,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254241644] [2023-11-19 04:14:40,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:40,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:40,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:40,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:40,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:14:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:40,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:14:40,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:40,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:40,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849518468] [2023-11-19 04:14:40,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:40,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254241644] [2023-11-19 04:14:40,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254241644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:40,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:40,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:40,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347290477] [2023-11-19 04:14:40,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:40,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:14:40,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:40,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:14:40,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:14:40,319 INFO L87 Difference]: Start difference. First operand 95 states and 116 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:40,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:40,429 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2023-11-19 04:14:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:14:40,429 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-19 04:14:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:40,431 INFO L225 Difference]: With dead ends: 103 [2023-11-19 04:14:40,431 INFO L226 Difference]: Without dead ends: 102 [2023-11-19 04:14:40,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:14:40,432 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 74 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:40,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 35 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:14:40,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-19 04:14:40,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2023-11-19 04:14:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 86 states have internal predecessors, (103), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:14:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2023-11-19 04:14:40,448 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 14 [2023-11-19 04:14:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:40,448 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2023-11-19 04:14:40,448 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2023-11-19 04:14:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:14:40,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:40,449 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:40,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:40,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:40,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:40,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1041691846, now seen corresponding path program 1 times [2023-11-19 04:14:40,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:40,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307668130] [2023-11-19 04:14:40,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:40,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:40,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:40,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863004413] [2023-11-19 04:14:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:40,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:40,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:40,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:40,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:14:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:40,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:14:40,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:40,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:40,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:40,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307668130] [2023-11-19 04:14:40,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:40,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863004413] [2023-11-19 04:14:40,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863004413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:40,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:40,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:40,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671741453] [2023-11-19 04:14:40,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:40,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:14:40,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:40,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:14:40,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:14:40,835 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:40,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:40,952 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2023-11-19 04:14:40,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:14:40,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-11-19 04:14:40,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:40,954 INFO L225 Difference]: With dead ends: 98 [2023-11-19 04:14:40,954 INFO L226 Difference]: Without dead ends: 97 [2023-11-19 04:14:40,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:14:40,955 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 64 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:40,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 40 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:14:40,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-19 04:14:40,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2023-11-19 04:14:40,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4166666666666667) internal successors, (102), 86 states have internal predecessors, (102), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:14:40,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2023-11-19 04:14:40,970 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 15 [2023-11-19 04:14:40,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:40,971 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2023-11-19 04:14:40,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:40,971 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2023-11-19 04:14:40,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 04:14:40,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:40,973 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:40,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:41,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 04:14:41,190 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:41,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash -240190041, now seen corresponding path program 1 times [2023-11-19 04:14:41,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:41,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536113504] [2023-11-19 04:14:41,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:41,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:41,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755708485] [2023-11-19 04:14:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:41,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:41,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:41,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:41,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:14:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:41,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:14:41,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:14:41,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:14:41,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:41,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536113504] [2023-11-19 04:14:41,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:41,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755708485] [2023-11-19 04:14:41,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755708485] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:14:41,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2112071463] [2023-11-19 04:14:41,454 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-19 04:14:41,454 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:14:41,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:14:41,464 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:14:41,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:14:42,224 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 44 for LOIs [2023-11-19 04:14:42,240 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:14:42,299 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:14:43,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2112071463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:43,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:14:43,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 17 [2023-11-19 04:14:43,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63716666] [2023-11-19 04:14:43,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:43,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:14:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:43,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:14:43,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:14:43,553 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:44,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:44,026 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions. [2023-11-19 04:14:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 04:14:44,027 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2023-11-19 04:14:44,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:44,028 INFO L225 Difference]: With dead ends: 103 [2023-11-19 04:14:44,028 INFO L226 Difference]: Without dead ends: 101 [2023-11-19 04:14:44,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:14:44,030 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:44,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 67 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:14:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-19 04:14:44,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2023-11-19 04:14:44,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.4) internal successors, (105), 89 states have internal predecessors, (105), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:14:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2023-11-19 04:14:44,047 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 25 [2023-11-19 04:14:44,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:44,048 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2023-11-19 04:14:44,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2023-11-19 04:14:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 04:14:44,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:44,049 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:44,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:44,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:44,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:44,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:44,264 INFO L85 PathProgramCache]: Analyzing trace with hash -240497881, now seen corresponding path program 1 times [2023-11-19 04:14:44,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:44,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963765577] [2023-11-19 04:14:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:44,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:44,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:44,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601827056] [2023-11-19 04:14:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:44,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:44,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:44,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:44,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:14:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:44,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:14:44,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:14:44,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:14:44,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963765577] [2023-11-19 04:14:44,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601827056] [2023-11-19 04:14:44,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601827056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:14:44,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [920833389] [2023-11-19 04:14:44,435 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-19 04:14:44,435 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:14:44,436 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:14:44,436 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:14:44,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:14:44,860 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 44 for LOIs [2023-11-19 04:14:44,869 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:14:44,908 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:14:45,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [920833389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:45,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:14:45,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 17 [2023-11-19 04:14:45,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464869115] [2023-11-19 04:14:45,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:45,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:14:45,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:45,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:14:45,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:14:45,926 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:46,319 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2023-11-19 04:14:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 04:14:46,320 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2023-11-19 04:14:46,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:46,321 INFO L225 Difference]: With dead ends: 105 [2023-11-19 04:14:46,321 INFO L226 Difference]: Without dead ends: 103 [2023-11-19 04:14:46,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:14:46,322 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 134 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:46,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 42 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:14:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-19 04:14:46,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-19 04:14:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 79 states have (on average 1.379746835443038) internal successors, (109), 93 states have internal predecessors, (109), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:14:46,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2023-11-19 04:14:46,349 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 25 [2023-11-19 04:14:46,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:46,350 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-11-19 04:14:46,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:46,350 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2023-11-19 04:14:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:14:46,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:46,352 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, 1, 1, 1, 1, 1] [2023-11-19 04:14:46,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:46,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:46,576 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:46,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:46,577 INFO L85 PathProgramCache]: Analyzing trace with hash -666847736, now seen corresponding path program 1 times [2023-11-19 04:14:46,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:46,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797698196] [2023-11-19 04:14:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:46,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:46,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:46,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222077481] [2023-11-19 04:14:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:46,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:46,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:46,592 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:46,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:14:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:46,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:14:46,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:46,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:46,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:46,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797698196] [2023-11-19 04:14:46,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:46,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222077481] [2023-11-19 04:14:46,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222077481] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:14:46,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1605048486] [2023-11-19 04:14:46,917 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 04:14:46,917 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:14:46,918 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:14:46,918 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:14:46,918 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:14:48,285 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-19 04:14:48,303 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:14:48,338 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:14:50,118 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2346#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= (+ 2147483649 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)) 0) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2023-11-19 04:14:50,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:14:50,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:14:50,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-19 04:14:50,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308545243] [2023-11-19 04:14:50,119 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 04:14:50,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:14:50,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:50,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:14:50,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2023-11-19 04:14:50,121 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:14:50,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:50,287 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2023-11-19 04:14:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:14:50,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-11-19 04:14:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:50,289 INFO L225 Difference]: With dead ends: 113 [2023-11-19 04:14:50,289 INFO L226 Difference]: Without dead ends: 111 [2023-11-19 04:14:50,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2023-11-19 04:14:50,291 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 60 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:50,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 55 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:14:50,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-19 04:14:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2023-11-19 04:14:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 79 states have (on average 1.3544303797468353) internal successors, (107), 91 states have internal predecessors, (107), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:14:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2023-11-19 04:14:50,312 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 28 [2023-11-19 04:14:50,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:50,312 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2023-11-19 04:14:50,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:14:50,313 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2023-11-19 04:14:50,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 04:14:50,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:50,314 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, 1, 1, 1, 1, 1] [2023-11-19 04:14:50,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:50,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:50,520 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:50,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:50,520 INFO L85 PathProgramCache]: Analyzing trace with hash 802556712, now seen corresponding path program 1 times [2023-11-19 04:14:50,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:50,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186563408] [2023-11-19 04:14:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:50,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:50,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:50,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152586822] [2023-11-19 04:14:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:50,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:50,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:50,547 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:50,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 04:14:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:50,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:14:50,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:50,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:50,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186563408] [2023-11-19 04:14:50,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152586822] [2023-11-19 04:14:50,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152586822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:14:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1740374234] [2023-11-19 04:14:50,913 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 04:14:50,914 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:14:50,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:14:50,915 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:14:50,915 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:14:51,943 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-19 04:14:51,962 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:14:51,986 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:14:53,772 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2738#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)))' at error location [2023-11-19 04:14:53,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:14:53,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:14:53,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-19 04:14:53,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541722042] [2023-11-19 04:14:53,773 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 04:14:53,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:14:53,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:14:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2023-11-19 04:14:53,775 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:14:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:53,972 INFO L93 Difference]: Finished difference Result 162 states and 179 transitions. [2023-11-19 04:14:53,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:14:53,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-11-19 04:14:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:53,974 INFO L225 Difference]: With dead ends: 162 [2023-11-19 04:14:53,974 INFO L226 Difference]: Without dead ends: 159 [2023-11-19 04:14:53,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2023-11-19 04:14:53,976 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 131 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:53,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 77 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:14:53,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-19 04:14:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 135. [2023-11-19 04:14:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 111 states have (on average 1.3783783783783783) internal successors, (153), 123 states have internal predecessors, (153), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 04:14:53,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 169 transitions. [2023-11-19 04:14:53,992 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 169 transitions. Word has length 29 [2023-11-19 04:14:53,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:53,992 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 169 transitions. [2023-11-19 04:14:53,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:14:53,992 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 169 transitions. [2023-11-19 04:14:53,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 04:14:53,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:53,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:54,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:54,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 04:14:54,208 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:54,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:54,208 INFO L85 PathProgramCache]: Analyzing trace with hash 417673248, now seen corresponding path program 1 times [2023-11-19 04:14:54,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:54,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664519402] [2023-11-19 04:14:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:54,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:54,226 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:54,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765999441] [2023-11-19 04:14:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:54,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:54,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:54,236 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:54,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 04:14:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:54,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:14:54,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:54,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:54,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:54,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664519402] [2023-11-19 04:14:54,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:54,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765999441] [2023-11-19 04:14:54,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765999441] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:14:54,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2041608768] [2023-11-19 04:14:54,450 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 04:14:54,450 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:14:54,451 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:14:54,451 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:14:54,451 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:14:55,400 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2023-11-19 04:14:55,407 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:14:55,427 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:14:56,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2041608768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:56,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:14:56,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3] total 19 [2023-11-19 04:14:56,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60846457] [2023-11-19 04:14:56,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:56,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 04:14:56,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:56,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 04:14:56,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-19 04:14:56,446 INFO L87 Difference]: Start difference. First operand 135 states and 169 transitions. Second operand has 18 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:57,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:57,894 INFO L93 Difference]: Finished difference Result 147 states and 173 transitions. [2023-11-19 04:14:57,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 04:14:57,895 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2023-11-19 04:14:57,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:57,897 INFO L225 Difference]: With dead ends: 147 [2023-11-19 04:14:57,897 INFO L226 Difference]: Without dead ends: 137 [2023-11-19 04:14:57,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:14:57,899 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 252 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:57,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 51 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:14:57,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-19 04:14:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2023-11-19 04:14:57,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 107 states have (on average 1.3364485981308412) internal successors, (143), 119 states have internal predecessors, (143), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 04:14:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 159 transitions. [2023-11-19 04:14:57,919 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 159 transitions. Word has length 31 [2023-11-19 04:14:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:57,920 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 159 transitions. [2023-11-19 04:14:57,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:14:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 159 transitions. [2023-11-19 04:14:57,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 04:14:57,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:57,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:57,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:58,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:58,124 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:14:58,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1115879924, now seen corresponding path program 1 times [2023-11-19 04:14:58,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:58,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143930369] [2023-11-19 04:14:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:58,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:58,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:58,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182899289] [2023-11-19 04:14:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:58,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:58,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:58,142 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:58,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 04:14:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:58,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:14:58,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:14:58,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:14:58,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:58,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143930369] [2023-11-19 04:14:58,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:58,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182899289] [2023-11-19 04:14:58,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182899289] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:14:58,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [659123915] [2023-11-19 04:14:58,515 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 04:14:58,515 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:14:58,515 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:14:58,515 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:14:58,515 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:14:59,437 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-19 04:14:59,452 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:14:59,482 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:15:01,112 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3772#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= (+ 2147483649 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) |ULTIMATE.start_main_~y3~0#1|) 0) (<= 0 (+ (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) 2147483648)) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2023-11-19 04:15:01,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:15:01,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:15:01,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-11-19 04:15:01,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428144817] [2023-11-19 04:15:01,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:01,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:15:01,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:01,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:15:01,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:15:01,115 INFO L87 Difference]: Start difference. First operand 131 states and 159 transitions. Second operand has 12 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:15:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:01,345 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2023-11-19 04:15:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:15:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-11-19 04:15:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:01,347 INFO L225 Difference]: With dead ends: 131 [2023-11-19 04:15:01,347 INFO L226 Difference]: Without dead ends: 128 [2023-11-19 04:15:01,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=176, Invalid=1014, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 04:15:01,349 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 112 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:01,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 27 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-19 04:15:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-11-19 04:15:01,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 107 states have (on average 1.2616822429906542) internal successors, (135), 116 states have internal predecessors, (135), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 04:15:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2023-11-19 04:15:01,365 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 32 [2023-11-19 04:15:01,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:01,366 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2023-11-19 04:15:01,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:15:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2023-11-19 04:15:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 04:15:01,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:01,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:01,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:01,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:01,584 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:15:01,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:01,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1952034530, now seen corresponding path program 1 times [2023-11-19 04:15:01,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:01,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824790195] [2023-11-19 04:15:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:01,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:01,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:15:01,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492599979] [2023-11-19 04:15:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:01,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:01,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:01,597 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:01,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 04:15:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:01,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:15:01,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:15:01,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:01,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:01,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824790195] [2023-11-19 04:15:01,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:15:01,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492599979] [2023-11-19 04:15:01,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492599979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:01,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:01,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:15:01,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169019917] [2023-11-19 04:15:01,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:01,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:15:01,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:01,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:15:01,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:15:01,690 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:15:01,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:01,757 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2023-11-19 04:15:01,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:15:01,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-11-19 04:15:01,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:01,759 INFO L225 Difference]: With dead ends: 130 [2023-11-19 04:15:01,759 INFO L226 Difference]: Without dead ends: 129 [2023-11-19 04:15:01,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:15:01,760 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:01,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 32 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-19 04:15:01,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2023-11-19 04:15:01,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 107 states have (on average 1.233644859813084) internal successors, (132), 116 states have internal predecessors, (132), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 04:15:01,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2023-11-19 04:15:01,776 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 33 [2023-11-19 04:15:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:01,776 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2023-11-19 04:15:01,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:15:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2023-11-19 04:15:01,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 04:15:01,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:01,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:01,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:01,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:01,992 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:15:01,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash -232539220, now seen corresponding path program 1 times [2023-11-19 04:15:01,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:01,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027920337] [2023-11-19 04:15:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:01,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:02,000 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:15:02,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637709406] [2023-11-19 04:15:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:02,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:02,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:02,002 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:02,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 04:15:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:02,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 04:15:02,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:15:02,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:15:02,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:02,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027920337] [2023-11-19 04:15:02,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:15:02,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637709406] [2023-11-19 04:15:02,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637709406] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:02,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [997143273] [2023-11-19 04:15:02,333 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 04:15:02,333 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:15:02,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:15:02,334 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:15:02,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:15:03,185 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-19 04:15:03,220 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:15:03,239 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:15:04,722 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4687#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= 2147483648 (+ (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) |ULTIMATE.start_main_~y3~0#1|)) (<= (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) 2147483647) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2023-11-19 04:15:04,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:15:04,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:15:04,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 04:15:04,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711673709] [2023-11-19 04:15:04,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:04,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 04:15:04,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 04:15:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2023-11-19 04:15:04,725 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 04:15:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:05,257 INFO L93 Difference]: Finished difference Result 215 states and 250 transitions. [2023-11-19 04:15:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 04:15:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2023-11-19 04:15:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:05,258 INFO L225 Difference]: With dead ends: 215 [2023-11-19 04:15:05,259 INFO L226 Difference]: Without dead ends: 143 [2023-11-19 04:15:05,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 04:15:05,261 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 103 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:05,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 57 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:15:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-19 04:15:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2023-11-19 04:15:05,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 118 states have (on average 1.194915254237288) internal successors, (141), 126 states have internal predecessors, (141), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:15:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 159 transitions. [2023-11-19 04:15:05,278 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 159 transitions. Word has length 33 [2023-11-19 04:15:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:05,278 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 159 transitions. [2023-11-19 04:15:05,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 04:15:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 159 transitions. [2023-11-19 04:15:05,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 04:15:05,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:05,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:05,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-19 04:15:05,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 04:15:05,500 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:15:05,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:05,501 INFO L85 PathProgramCache]: Analyzing trace with hash 556894475, now seen corresponding path program 1 times [2023-11-19 04:15:05,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:05,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774202928] [2023-11-19 04:15:05,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:05,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:05,508 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:15:05,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367389703] [2023-11-19 04:15:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:05,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:05,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:05,510 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:05,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 04:15:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:05,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:15:05,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:15:05,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:15:05,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:05,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774202928] [2023-11-19 04:15:05,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:15:05,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367389703] [2023-11-19 04:15:05,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367389703] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:05,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1162806107] [2023-11-19 04:15:05,639 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 04:15:05,640 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:15:05,640 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:15:05,640 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:15:05,640 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:15:06,404 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2023-11-19 04:15:06,410 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:15:06,434 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:15:07,541 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5353#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_~y2~0#1|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y1~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2023-11-19 04:15:07,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:15:07,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:15:07,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-19 04:15:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142172649] [2023-11-19 04:15:07,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:07,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:15:07,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:15:07,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-11-19 04:15:07,543 INFO L87 Difference]: Start difference. First operand 139 states and 159 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 04:15:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:07,664 INFO L93 Difference]: Finished difference Result 330 states and 385 transitions. [2023-11-19 04:15:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:15:07,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2023-11-19 04:15:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:07,667 INFO L225 Difference]: With dead ends: 330 [2023-11-19 04:15:07,668 INFO L226 Difference]: Without dead ends: 328 [2023-11-19 04:15:07,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-11-19 04:15:07,669 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:07,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 96 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:07,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-19 04:15:07,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 275. [2023-11-19 04:15:07,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 246 states have (on average 1.1951219512195121) internal successors, (294), 253 states have internal predecessors, (294), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 04:15:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 330 transitions. [2023-11-19 04:15:07,704 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 330 transitions. Word has length 39 [2023-11-19 04:15:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:07,705 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 330 transitions. [2023-11-19 04:15:07,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 04:15:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 330 transitions. [2023-11-19 04:15:07,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 04:15:07,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:07,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:07,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:07,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 04:15:07,916 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:15:07,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:07,916 INFO L85 PathProgramCache]: Analyzing trace with hash -737206946, now seen corresponding path program 1 times [2023-11-19 04:15:07,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:07,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086039920] [2023-11-19 04:15:07,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:07,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:07,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:15:07,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653934226] [2023-11-19 04:15:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:07,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:07,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:07,926 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:07,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 04:15:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:07,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:15:07,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:15:07,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:07,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:07,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086039920] [2023-11-19 04:15:07,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:15:07,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653934226] [2023-11-19 04:15:07,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653934226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:07,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:07,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:15:08,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099869219] [2023-11-19 04:15:08,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:08,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:08,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:08,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:08,002 INFO L87 Difference]: Start difference. First operand 275 states and 330 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 04:15:08,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:08,050 INFO L93 Difference]: Finished difference Result 275 states and 330 transitions. [2023-11-19 04:15:08,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:08,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2023-11-19 04:15:08,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:08,053 INFO L225 Difference]: With dead ends: 275 [2023-11-19 04:15:08,053 INFO L226 Difference]: Without dead ends: 273 [2023-11-19 04:15:08,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:08,054 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 14 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:08,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 71 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:15:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-19 04:15:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-11-19 04:15:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 246 states have (on average 1.1544715447154472) internal successors, (284), 251 states have internal predecessors, (284), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 04:15:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 320 transitions. [2023-11-19 04:15:08,087 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 320 transitions. Word has length 44 [2023-11-19 04:15:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:08,087 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 320 transitions. [2023-11-19 04:15:08,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 04:15:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 320 transitions. [2023-11-19 04:15:08,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 04:15:08,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:08,089 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:08,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:08,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 04:15:08,304 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:15:08,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1330777114, now seen corresponding path program 2 times [2023-11-19 04:15:08,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:08,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737623708] [2023-11-19 04:15:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:08,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:08,311 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:15:08,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023427138] [2023-11-19 04:15:08,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:15:08,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:08,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:08,313 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:08,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 04:15:08,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 04:15:08,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:15:08,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 04:15:08,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:15:08,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:08,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:08,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737623708] [2023-11-19 04:15:08,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:15:08,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023427138] [2023-11-19 04:15:08,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023427138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:08,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1043531464] [2023-11-19 04:15:08,750 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 04:15:08,750 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:15:08,751 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:15:08,751 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:15:08,751 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:15:09,627 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-19 04:15:09,638 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:15:09,658 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:15:11,492 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6992#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)))' at error location [2023-11-19 04:15:11,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:15:11,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:11,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-19 04:15:11,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562252253] [2023-11-19 04:15:11,492 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:11,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 04:15:11,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:11,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 04:15:11,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 04:15:11,494 INFO L87 Difference]: Start difference. First operand 273 states and 320 transitions. Second operand has 11 states, 8 states have (on average 4.875) internal successors, (39), 10 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:15:11,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:11,903 INFO L93 Difference]: Finished difference Result 364 states and 430 transitions. [2023-11-19 04:15:11,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 04:15:11,904 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 4.875) internal successors, (39), 10 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 47 [2023-11-19 04:15:11,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:11,907 INFO L225 Difference]: With dead ends: 364 [2023-11-19 04:15:11,907 INFO L226 Difference]: Without dead ends: 361 [2023-11-19 04:15:11,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=222, Invalid=1338, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 04:15:11,909 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 102 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:11,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 133 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:15:11,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-19 04:15:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 273. [2023-11-19 04:15:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 246 states have (on average 1.1544715447154472) internal successors, (284), 251 states have internal predecessors, (284), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 04:15:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 320 transitions. [2023-11-19 04:15:11,943 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 320 transitions. Word has length 47 [2023-11-19 04:15:11,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:11,944 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 320 transitions. [2023-11-19 04:15:11,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 4.875) internal successors, (39), 10 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:15:11,944 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 320 transitions. [2023-11-19 04:15:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 04:15:11,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:11,945 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:11,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:12,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 04:15:12,160 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:15:12,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash 873074626, now seen corresponding path program 1 times [2023-11-19 04:15:12,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:12,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498213265] [2023-11-19 04:15:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:12,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:12,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:15:12,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566519253] [2023-11-19 04:15:12,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:12,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:12,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:12,181 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:12,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 04:15:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:12,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:15:12,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 04:15:12,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 04:15:12,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:12,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498213265] [2023-11-19 04:15:12,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:15:12,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566519253] [2023-11-19 04:15:12,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566519253] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:12,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1025351748] [2023-11-19 04:15:12,404 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 04:15:12,404 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:15:12,404 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:15:12,404 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:15:12,404 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:15:13,573 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 45 for LOIs [2023-11-19 04:15:13,590 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:15:13,620 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:15:16,064 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8135#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (<= |ULTIMATE.start_main_~y2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= 0 |ULTIMATE.start_main_~y2~0#1|) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)))' at error location [2023-11-19 04:15:16,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:15:16,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:15:16,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-19 04:15:16,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273305812] [2023-11-19 04:15:16,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:16,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:15:16,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:15:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2023-11-19 04:15:16,066 INFO L87 Difference]: Start difference. First operand 273 states and 320 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 04:15:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:16,277 INFO L93 Difference]: Finished difference Result 540 states and 640 transitions. [2023-11-19 04:15:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:15:16,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 65 [2023-11-19 04:15:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:16,283 INFO L225 Difference]: With dead ends: 540 [2023-11-19 04:15:16,284 INFO L226 Difference]: Without dead ends: 447 [2023-11-19 04:15:16,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 154 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2023-11-19 04:15:16,286 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 70 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:16,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 112 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-19 04:15:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 307. [2023-11-19 04:15:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 278 states have (on average 1.143884892086331) internal successors, (318), 283 states have internal predecessors, (318), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 04:15:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 358 transitions. [2023-11-19 04:15:16,321 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 358 transitions. Word has length 65 [2023-11-19 04:15:16,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:16,321 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 358 transitions. [2023-11-19 04:15:16,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 04:15:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 358 transitions. [2023-11-19 04:15:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 04:15:16,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:16,322 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:16,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:16,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 04:15:16,539 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:15:16,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1927181452, now seen corresponding path program 3 times [2023-11-19 04:15:16,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:16,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520957762] [2023-11-19 04:15:16,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:16,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:16,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:15:16,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463553281] [2023-11-19 04:15:16,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:15:16,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:16,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:16,551 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:16,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 04:15:16,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:15:16,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:15:16,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:15:16,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:15:16,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:17,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:17,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520957762] [2023-11-19 04:15:17,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:15:17,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463553281] [2023-11-19 04:15:17,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463553281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:17,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [151691723] [2023-11-19 04:15:17,395 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 04:15:17,395 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:15:17,395 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:15:17,395 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:15:17,396 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:15:18,201 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-19 04:15:18,213 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:15:18,248 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:15:20,256 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9360#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)))' at error location [2023-11-19 04:15:20,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:15:20,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:20,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-19 04:15:20,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038807536] [2023-11-19 04:15:20,256 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:20,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 04:15:20,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:20,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 04:15:20,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 04:15:20,258 INFO L87 Difference]: Start difference. First operand 307 states and 358 transitions. Second operand has 10 states, 8 states have (on average 6.625) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:15:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:20,904 INFO L93 Difference]: Finished difference Result 465 states and 552 transitions. [2023-11-19 04:15:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 04:15:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 65 [2023-11-19 04:15:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:20,907 INFO L225 Difference]: With dead ends: 465 [2023-11-19 04:15:20,908 INFO L226 Difference]: Without dead ends: 462 [2023-11-19 04:15:20,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 04:15:20,909 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:20,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 149 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:15:20,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-19 04:15:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 323. [2023-11-19 04:15:20,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 293 states have (on average 1.1399317406143346) internal successors, (334), 298 states have internal predecessors, (334), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 04:15:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 376 transitions. [2023-11-19 04:15:20,948 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 376 transitions. Word has length 65 [2023-11-19 04:15:20,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:20,949 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 376 transitions. [2023-11-19 04:15:20,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:15:20,949 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 376 transitions. [2023-11-19 04:15:20,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 04:15:20,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:20,950 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:20,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:21,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:21,160 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:15:21,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash -534088134, now seen corresponding path program 1 times [2023-11-19 04:15:21,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:21,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798006098] [2023-11-19 04:15:21,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:21,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:21,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:15:21,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926377073] [2023-11-19 04:15:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:21,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:21,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:21,174 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:21,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 04:15:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:21,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 04:15:21,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-19 04:15:21,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-19 04:15:21,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798006098] [2023-11-19 04:15:21,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:15:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926377073] [2023-11-19 04:15:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926377073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [875382551] [2023-11-19 04:15:21,531 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 04:15:21,531 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:15:21,532 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:15:21,532 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:15:21,532 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:15:22,476 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 45 for LOIs [2023-11-19 04:15:22,490 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:15:22,515 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:15:25,025 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10689#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~y2~0#1| 2147483647) (<= (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) 2147483647) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (<= 2147483648 (+ (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) |ULTIMATE.start_main_~y2~0#1|)))' at error location [2023-11-19 04:15:25,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:15:25,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:15:25,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-11-19 04:15:25,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200816641] [2023-11-19 04:15:25,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:25,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 04:15:25,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:25,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 04:15:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 04:15:25,028 INFO L87 Difference]: Start difference. First operand 323 states and 376 transitions. Second operand has 10 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 04:15:25,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:25,333 INFO L93 Difference]: Finished difference Result 324 states and 376 transitions. [2023-11-19 04:15:25,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 04:15:25,333 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 67 [2023-11-19 04:15:25,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:25,336 INFO L225 Difference]: With dead ends: 324 [2023-11-19 04:15:25,336 INFO L226 Difference]: Without dead ends: 318 [2023-11-19 04:15:25,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 153 SyntacticMatches, 15 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=216, Invalid=1424, Unknown=0, NotChecked=0, Total=1640 [2023-11-19 04:15:25,348 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 107 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:25,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 27 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:25,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-19 04:15:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2023-11-19 04:15:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 289 states have (on average 1.0968858131487889) internal successors, (317), 292 states have internal predecessors, (317), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 04:15:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 359 transitions. [2023-11-19 04:15:25,402 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 359 transitions. Word has length 67 [2023-11-19 04:15:25,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:25,403 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 359 transitions. [2023-11-19 04:15:25,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 04:15:25,403 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 359 transitions. [2023-11-19 04:15:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 04:15:25,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:25,405 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:25,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:25,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:25,612 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:15:25,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:25,612 INFO L85 PathProgramCache]: Analyzing trace with hash -869991702, now seen corresponding path program 2 times [2023-11-19 04:15:25,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:25,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895243239] [2023-11-19 04:15:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:25,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:25,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:15:25,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139231401] [2023-11-19 04:15:25,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:15:25,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:25,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:25,624 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:25,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 04:15:25,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-19 04:15:25,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:15:25,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:15:25,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:15:25,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:26,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:26,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895243239] [2023-11-19 04:15:26,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:15:26,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139231401] [2023-11-19 04:15:26,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139231401] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:26,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1664326081] [2023-11-19 04:15:26,041 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 04:15:26,041 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:15:26,042 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:15:26,042 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:15:26,042 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:15:26,948 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 45 for LOIs [2023-11-19 04:15:26,962 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-19 04:15:26,982 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:15:29,192 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11748#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (<= |ULTIMATE.start_main_~y2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= 0 |ULTIMATE.start_main_~y2~0#1|) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)))' at error location [2023-11-19 04:15:29,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:15:29,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:29,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-19 04:15:29,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868364237] [2023-11-19 04:15:29,192 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:29,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:15:29,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:29,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:15:29,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 04:15:29,194 INFO L87 Difference]: Start difference. First operand 317 states and 359 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:15:29,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:29,581 INFO L93 Difference]: Finished difference Result 588 states and 672 transitions. [2023-11-19 04:15:29,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 04:15:29,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 83 [2023-11-19 04:15:29,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:29,585 INFO L225 Difference]: With dead ends: 588 [2023-11-19 04:15:29,585 INFO L226 Difference]: Without dead ends: 450 [2023-11-19 04:15:29,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 141 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 04:15:29,588 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 93 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:29,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 143 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:15:29,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-11-19 04:15:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 381. [2023-11-19 04:15:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 349 states have (on average 1.0830945558739256) internal successors, (378), 352 states have internal predecessors, (378), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 04:15:29,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 428 transitions. [2023-11-19 04:15:29,643 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 428 transitions. Word has length 83 [2023-11-19 04:15:29,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:29,644 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 428 transitions. [2023-11-19 04:15:29,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:15:29,644 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 428 transitions. [2023-11-19 04:15:29,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 04:15:29,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:29,646 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:29,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:29,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:29,868 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 04:15:29,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:29,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1419346228, now seen corresponding path program 3 times [2023-11-19 04:15:29,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:29,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376917533] [2023-11-19 04:15:29,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:29,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:29,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:15:29,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607368003] [2023-11-19 04:15:29,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:15:29,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:29,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:29,882 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:29,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f615d7d2-553e-42dc-8f26-5f12d7c2296e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 04:15:29,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:15:29,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:15:29,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:15:29,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 58 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 04:15:30,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 04:15:30,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376917533] [2023-11-19 04:15:30,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:15:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607368003] [2023-11-19 04:15:30,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607368003] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:30,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1991149604] [2023-11-19 04:15:30,220 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 04:15:30,220 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:15:30,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:15:30,221 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:15:30,221 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs