./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3523bc8254ad35e64aad06fd6e3c84672a9aa19521e18482795d6584edb45d0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:19:02,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:19:02,350 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 21:19:02,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:19:02,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:19:02,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:19:02,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:19:02,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:19:02,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:19:02,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:19:02,386 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:19:02,387 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:19:02,388 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:19:02,388 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:19:02,389 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:19:02,390 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:19:02,390 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:19:02,391 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:19:02,392 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:19:02,392 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:19:02,393 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:19:02,393 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:19:02,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:19:02,395 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:19:02,395 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:19:02,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:19:02,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:19:02,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:19:02,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:19:02,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:19:02,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:19:02,399 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:19:02,400 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:19:02,400 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:19:02,401 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:19:02,401 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:19:02,402 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:19:02,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:19:02,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:19:02,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:19:02,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:19:02,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:19:02,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:19:02,406 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:19:02,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:19:02,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:19:02,407 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:19:02,407 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:19:02,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:19:02,408 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_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3523bc8254ad35e64aad06fd6e3c84672a9aa19521e18482795d6584edb45d0 [2023-11-23 21:19:02,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:19:02,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:19:02,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:19:02,715 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:19:02,716 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:19:02,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.c [2023-11-23 21:19:06,064 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:19:06,329 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:19:06,330 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.c [2023-11-23 21:19:06,339 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/data/d1d32d100/ed2ef6d918ec4b0ca529779eddf14073/FLAG4ccad88c2 [2023-11-23 21:19:06,364 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/data/d1d32d100/ed2ef6d918ec4b0ca529779eddf14073 [2023-11-23 21:19:06,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:19:06,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:19:06,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:19:06,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:19:06,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:19:06,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4701c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06, skipping insertion in model container [2023-11-23 21:19:06,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,408 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:19:06,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:19:06,586 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:19:06,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:19:06,624 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:19:06,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06 WrapperNode [2023-11-23 21:19:06,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:19:06,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:19:06,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:19:06,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:19:06,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,670 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-11-23 21:19:06,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:19:06,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:19:06,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:19:06,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:19:06,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,697 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:19:06,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:19:06,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:19:06,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:19:06,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (1/1) ... [2023-11-23 21:19:06,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:19:06,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:06,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:19:06,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:19:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:19:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:19:06,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:19:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:19:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:19:06,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:19:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:19:06,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:19:06,871 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:19:06,873 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:19:07,249 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:19:07,286 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:19:07,287 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:19:07,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:07 BoogieIcfgContainer [2023-11-23 21:19:07,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:19:07,311 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:19:07,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:19:07,315 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:19:07,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:19:06" (1/3) ... [2023-11-23 21:19:07,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3872a396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:19:07, skipping insertion in model container [2023-11-23 21:19:07,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:06" (2/3) ... [2023-11-23 21:19:07,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3872a396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:19:07, skipping insertion in model container [2023-11-23 21:19:07,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:07" (3/3) ... [2023-11-23 21:19:07,318 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound100.c [2023-11-23 21:19:07,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:19:07,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-23 21:19:07,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:19:07,403 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;@3c28fdbb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:19:07,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-23 21:19:07,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 21:19:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:19:07,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:07,417 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:07,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:07,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1276581072, now seen corresponding path program 1 times [2023-11-23 21:19:07,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:07,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326275324] [2023-11-23 21:19:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:07,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:07,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:07,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326275324] [2023-11-23 21:19:07,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 21:19:07,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408737902] [2023-11-23 21:19:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:07,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:07,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:07,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:07,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:19:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:07,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:19:07,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:07,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:19:07,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:07,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408737902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:07,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:07,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:19:07,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378320107] [2023-11-23 21:19:07,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:07,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:19:07,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:07,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:19:07,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:19:07,727 INFO L87 Difference]: Start difference. First operand has 72 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 21:19:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:07,781 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2023-11-23 21:19:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:19:07,784 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 15 [2023-11-23 21:19:07,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:07,794 INFO L225 Difference]: With dead ends: 119 [2023-11-23 21:19:07,794 INFO L226 Difference]: Without dead ends: 68 [2023-11-23 21:19:07,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:19:07,801 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:07,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:19:07,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-23 21:19:07,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-23 21:19:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 57 states have internal predecessors, (60), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:19:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2023-11-23 21:19:07,845 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 15 [2023-11-23 21:19:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:07,847 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2023-11-23 21:19:07,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 21:19:07,847 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2023-11-23 21:19:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:19:07,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:07,849 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:07,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:08,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:08,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:08,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash 497489263, now seen corresponding path program 1 times [2023-11-23 21:19:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:08,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603138039] [2023-11-23 21:19:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:08,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:08,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:08,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151897909] [2023-11-23 21:19:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:08,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:08,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:08,098 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:08,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:19:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:08,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:19:08,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:19:08,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:08,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:08,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603138039] [2023-11-23 21:19:08,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:08,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151897909] [2023-11-23 21:19:08,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151897909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:08,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:08,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:19:08,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655665429] [2023-11-23 21:19:08,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:08,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:19:08,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:08,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:19:08,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:08,221 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:19:08,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:08,300 INFO L93 Difference]: Finished difference Result 142 states and 161 transitions. [2023-11-23 21:19:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:19:08,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 20 [2023-11-23 21:19:08,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:08,303 INFO L225 Difference]: With dead ends: 142 [2023-11-23 21:19:08,304 INFO L226 Difference]: Without dead ends: 95 [2023-11-23 21:19:08,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:08,306 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 28 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:08,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 109 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:19:08,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-23 21:19:08,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2023-11-23 21:19:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 50 states have (on average 1.66) internal successors, (83), 73 states have internal predecessors, (83), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:19:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2023-11-23 21:19:08,324 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 20 [2023-11-23 21:19:08,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:08,324 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2023-11-23 21:19:08,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:19:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2023-11-23 21:19:08,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:19:08,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:08,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:08,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:08,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:08,547 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:08,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:08,548 INFO L85 PathProgramCache]: Analyzing trace with hash 961396655, now seen corresponding path program 1 times [2023-11-23 21:19:08,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:08,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027106313] [2023-11-23 21:19:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:08,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:08,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:08,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041312960] [2023-11-23 21:19:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:08,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:08,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:08,570 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:08,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:19:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:08,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:19:08,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:19:08,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:08,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:08,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027106313] [2023-11-23 21:19:08,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:08,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041312960] [2023-11-23 21:19:08,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041312960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:08,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:08,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:19:08,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499387656] [2023-11-23 21:19:08,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:08,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:19:08,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:08,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:19:08,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:08,683 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:19:08,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:08,816 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2023-11-23 21:19:08,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:19:08,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 26 [2023-11-23 21:19:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:08,819 INFO L225 Difference]: With dead ends: 89 [2023-11-23 21:19:08,819 INFO L226 Difference]: Without dead ends: 87 [2023-11-23 21:19:08,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:08,821 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 47 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:08,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 62 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:19:08,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-23 21:19:08,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-23 21:19:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 50 states have (on average 1.6) internal successors, (80), 71 states have internal predecessors, (80), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:19:08,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2023-11-23 21:19:08,849 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 26 [2023-11-23 21:19:08,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:08,850 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2023-11-23 21:19:08,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:19:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2023-11-23 21:19:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:19:08,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:08,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:08,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:09,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:09,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:09,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash -261476083, now seen corresponding path program 1 times [2023-11-23 21:19:09,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:09,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060052499] [2023-11-23 21:19:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:09,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:09,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:09,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897646819] [2023-11-23 21:19:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:09,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:09,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:09,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:09,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:19:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:09,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:19:09,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:19:09,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:09,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:09,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060052499] [2023-11-23 21:19:09,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:09,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897646819] [2023-11-23 21:19:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897646819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:09,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:09,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:19:09,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616963675] [2023-11-23 21:19:09,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:09,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:19:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:09,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:19:09,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:09,240 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:19:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:09,336 INFO L93 Difference]: Finished difference Result 127 states and 149 transitions. [2023-11-23 21:19:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:19:09,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2023-11-23 21:19:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:09,345 INFO L225 Difference]: With dead ends: 127 [2023-11-23 21:19:09,345 INFO L226 Difference]: Without dead ends: 123 [2023-11-23 21:19:09,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:09,351 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 43 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:09,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 90 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:19:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-23 21:19:09,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 104. [2023-11-23 21:19:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 86 states have internal predecessors, (102), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:19:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2023-11-23 21:19:09,382 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 27 [2023-11-23 21:19:09,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:09,383 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2023-11-23 21:19:09,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:19:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2023-11-23 21:19:09,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:19:09,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:09,386 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:09,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:09,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:09,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:09,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:09,601 INFO L85 PathProgramCache]: Analyzing trace with hash -261474705, now seen corresponding path program 1 times [2023-11-23 21:19:09,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:09,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076661570] [2023-11-23 21:19:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:09,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:09,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:09,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344471341] [2023-11-23 21:19:09,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:09,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:09,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:09,621 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:09,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:19:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:09,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:19:09,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:19:09,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:09,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076661570] [2023-11-23 21:19:09,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344471341] [2023-11-23 21:19:09,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344471341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:09,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:09,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:19:09,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454637842] [2023-11-23 21:19:09,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:09,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:19:09,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:09,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:19:09,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:09,717 INFO L87 Difference]: Start difference. First operand 104 states and 132 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:19:09,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:09,787 INFO L93 Difference]: Finished difference Result 113 states and 137 transitions. [2023-11-23 21:19:09,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:19:09,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2023-11-23 21:19:09,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:09,790 INFO L225 Difference]: With dead ends: 113 [2023-11-23 21:19:09,790 INFO L226 Difference]: Without dead ends: 112 [2023-11-23 21:19:09,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:09,791 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 16 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:09,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 111 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:19:09,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-23 21:19:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2023-11-23 21:19:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 86 states have internal predecessors, (101), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:19:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 131 transitions. [2023-11-23 21:19:09,828 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 131 transitions. Word has length 27 [2023-11-23 21:19:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:09,829 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 131 transitions. [2023-11-23 21:19:09,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:19:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 131 transitions. [2023-11-23 21:19:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:19:09,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:09,831 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:09,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:10,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:10,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:10,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:10,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2124557295, now seen corresponding path program 1 times [2023-11-23 21:19:10,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:10,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956106445] [2023-11-23 21:19:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:10,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:10,069 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:10,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935736972] [2023-11-23 21:19:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:10,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:10,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:10,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:10,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:19:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:10,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:19:10,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:19:10,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:10,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:10,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956106445] [2023-11-23 21:19:10,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:10,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935736972] [2023-11-23 21:19:10,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935736972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:10,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:10,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:19:10,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923788751] [2023-11-23 21:19:10,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:10,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:19:10,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:10,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:19:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:19:10,198 INFO L87 Difference]: Start difference. First operand 104 states and 131 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:19:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:10,419 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2023-11-23 21:19:10,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:19:10,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 29 [2023-11-23 21:19:10,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:10,421 INFO L225 Difference]: With dead ends: 119 [2023-11-23 21:19:10,421 INFO L226 Difference]: Without dead ends: 118 [2023-11-23 21:19:10,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:19:10,423 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 41 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:10,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 108 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:19:10,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-23 21:19:10,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 104. [2023-11-23 21:19:10,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.523076923076923) internal successors, (99), 86 states have internal predecessors, (99), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:19:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2023-11-23 21:19:10,442 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 29 [2023-11-23 21:19:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:10,442 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2023-11-23 21:19:10,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:19:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2023-11-23 21:19:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 21:19:10,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:10,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:10,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:10,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:10,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:10,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:10,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1436766790, now seen corresponding path program 1 times [2023-11-23 21:19:10,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:10,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945832829] [2023-11-23 21:19:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:10,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:10,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:10,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889318355] [2023-11-23 21:19:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:10,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:10,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:10,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:10,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:19:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:10,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:19:10,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:19:10,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:10,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:10,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945832829] [2023-11-23 21:19:10,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:10,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889318355] [2023-11-23 21:19:10,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889318355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:10,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:10,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:19:10,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189305938] [2023-11-23 21:19:10,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:10,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:19:10,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:10,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:19:10,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:10,831 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:19:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:10,919 INFO L93 Difference]: Finished difference Result 118 states and 136 transitions. [2023-11-23 21:19:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:19:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2023-11-23 21:19:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:10,929 INFO L225 Difference]: With dead ends: 118 [2023-11-23 21:19:10,929 INFO L226 Difference]: Without dead ends: 115 [2023-11-23 21:19:10,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:10,931 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 33 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:10,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 83 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:19:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-23 21:19:10,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2023-11-23 21:19:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 87 states have internal predecessors, (98), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:19:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2023-11-23 21:19:10,994 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 30 [2023-11-23 21:19:10,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:10,994 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2023-11-23 21:19:10,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:19:10,995 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2023-11-23 21:19:10,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-23 21:19:10,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:10,997 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:11,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:11,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:11,198 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:11,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:11,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2035367729, now seen corresponding path program 1 times [2023-11-23 21:19:11,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:11,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348771377] [2023-11-23 21:19:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:11,223 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:11,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395335151] [2023-11-23 21:19:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:11,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:11,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:11,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:11,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:19:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:11,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:19:11,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 21:19:11,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:19:11,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:11,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348771377] [2023-11-23 21:19:11,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:11,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395335151] [2023-11-23 21:19:11,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395335151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:19:11,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1788795899] [2023-11-23 21:19:11,788 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-23 21:19:11,788 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:19:11,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:19:11,797 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:19:11,798 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:19:15,847 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-11-23 21:19:15,849 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-23 21:19:15,851 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:19:17,858 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296))) (and (<= 1 |c_#StackHeapBarrier|) (<= (+ 9223372036854775809 (* |c_ULTIMATE.start_main_~p~0#1| .cse0)) 0) (let ((.cse1 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (= .cse1 |c_ULTIMATE.start_main_~r~0#1|))) (or (let ((.cse2 (select |c_#memory_int| 1))) (and (= (select |c_#valid| 0) 0) (= (select |c_#valid| 3) 1) (= 2 (select |c_#length| 1)) (= (select |c_#valid| 1) 1) (= |c_ULTIMATE.start_main_~d~0#1| .cse0) (= (select |c_#length| 2) 10) (<= .cse0 100) (= |c_ULTIMATE.start_main_~p~0#1| 1) (= (select |c_#valid| 2) 1) (<= 1 .cse0) (<= .cse1 100) (= (select .cse2 1) 0) .cse3 (= (select |c_#length| 3) 12) (= 48 (select .cse2 0)))) (let ((.cse5 (div (* (- 1) |c_ULTIMATE.start_main_~p~0#1|) 2))) (let ((.cse4 (* .cse5 .cse0))) (and (<= 0 (+ |c_ULTIMATE.start_main_~r~0#1| .cse4)) (<= .cse5 4611686018427387904) (= (+ |c_ULTIMATE.start_main_~d~0#1| (* 2 .cse4)) 0) (<= 0 (+ .cse5 4611686018427387903)) (<= 0 (+ 4611686018427387903 .cse4)) (<= .cse4 4611686018427387904) .cse3 (= (mod |c_ULTIMATE.start_main_~p~0#1| 2) 0))))))) (= 0 |c_ULTIMATE.start_main_~q~0#1|))) is different from false [2023-11-23 21:19:25,301 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2533#(and (<= 1 |#StackHeapBarrier|) (or (and (= (select |#length| 3) 12) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (<= 1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 100) (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 100) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~r~0#1| (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select (select |#memory_int| 1) 0) 48) (= 10 (select |#length| 2)) (= (select (select |#memory_int| 1) 1) 0)) (and (<= 0 (+ (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 4611686018427387903)) (= (mod |ULTIMATE.start_main_~p~0#1| 2) 0) (<= 0 (+ (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) 4611686018427387903)) (= (+ |ULTIMATE.start_main_~d~0#1| (* (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 2)) 0) (<= (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) 4611686018427387904) (<= 0 (+ (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~r~0#1| (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (<= (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 4611686018427387904))) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) 0) (= |ULTIMATE.start_main_~q~0#1| 0))' at error location [2023-11-23 21:19:25,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:19:25,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:19:25,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-23 21:19:25,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40948656] [2023-11-23 21:19:25,304 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 21:19:25,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:19:25,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:19:25,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=532, Unknown=3, NotChecked=48, Total=702 [2023-11-23 21:19:25,307 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 21:19:25,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:25,696 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2023-11-23 21:19:25,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:19:25,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 37 [2023-11-23 21:19:25,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:25,699 INFO L225 Difference]: With dead ends: 127 [2023-11-23 21:19:25,699 INFO L226 Difference]: Without dead ends: 119 [2023-11-23 21:19:25,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=165, Invalid=766, Unknown=3, NotChecked=58, Total=992 [2023-11-23 21:19:25,701 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 169 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:25,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 135 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:19:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-23 21:19:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2023-11-23 21:19:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 74 states have (on average 1.364864864864865) internal successors, (101), 91 states have internal predecessors, (101), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-23 21:19:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 135 transitions. [2023-11-23 21:19:25,723 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 135 transitions. Word has length 37 [2023-11-23 21:19:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:25,724 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 135 transitions. [2023-11-23 21:19:25,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 21:19:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 135 transitions. [2023-11-23 21:19:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 21:19:25,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:25,732 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:25,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:25,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:25,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:25,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:25,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1328109789, now seen corresponding path program 1 times [2023-11-23 21:19:25,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:25,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619795662] [2023-11-23 21:19:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:25,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:25,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:25,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451545357] [2023-11-23 21:19:25,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:25,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:25,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:26,001 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:26,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:19:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:26,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:19:26,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 21:19:26,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:19:26,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619795662] [2023-11-23 21:19:26,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:26,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451545357] [2023-11-23 21:19:26,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451545357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:19:26,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1897800642] [2023-11-23 21:19:26,462 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-23 21:19:26,462 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:19:26,463 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:19:26,463 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:19:26,463 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:19:28,614 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-11-23 21:19:28,619 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-23 21:19:28,620 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:19:31,143 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3014#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-11-23 21:19:31,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:19:31,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:19:31,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-23 21:19:31,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902229580] [2023-11-23 21:19:31,144 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 21:19:31,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:19:31,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:31,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:19:31,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2023-11-23 21:19:31,145 INFO L87 Difference]: Start difference. First operand 111 states and 135 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 21:19:31,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:31,829 INFO L93 Difference]: Finished difference Result 200 states and 241 transitions. [2023-11-23 21:19:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:19:31,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 38 [2023-11-23 21:19:31,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:31,836 INFO L225 Difference]: With dead ends: 200 [2023-11-23 21:19:31,837 INFO L226 Difference]: Without dead ends: 196 [2023-11-23 21:19:31,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:19:31,838 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 183 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:31,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 219 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:19:31,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-23 21:19:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 166. [2023-11-23 21:19:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 120 states have (on average 1.3583333333333334) internal successors, (163), 137 states have internal predecessors, (163), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-23 21:19:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2023-11-23 21:19:31,858 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 38 [2023-11-23 21:19:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:31,859 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2023-11-23 21:19:31,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 21:19:31,860 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2023-11-23 21:19:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 21:19:31,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:31,861 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:31,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:32,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 21:19:32,076 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:32,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:32,077 INFO L85 PathProgramCache]: Analyzing trace with hash 594456455, now seen corresponding path program 1 times [2023-11-23 21:19:32,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:32,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850300091] [2023-11-23 21:19:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:32,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:32,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:32,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839787590] [2023-11-23 21:19:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:32,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:32,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:32,095 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:32,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:19:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:32,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:19:32,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 21:19:32,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:32,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:32,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850300091] [2023-11-23 21:19:32,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:32,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839787590] [2023-11-23 21:19:32,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839787590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:32,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:32,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:19:32,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100339612] [2023-11-23 21:19:32,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:32,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:19:32,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:32,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:19:32,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:19:32,212 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:19:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:32,367 INFO L93 Difference]: Finished difference Result 177 states and 224 transitions. [2023-11-23 21:19:32,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:19:32,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 42 [2023-11-23 21:19:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:32,369 INFO L225 Difference]: With dead ends: 177 [2023-11-23 21:19:32,370 INFO L226 Difference]: Without dead ends: 162 [2023-11-23 21:19:32,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:19:32,371 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 36 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:32,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 117 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:19:32,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-23 21:19:32,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2023-11-23 21:19:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.4193548387096775) internal successors, (132), 110 states have internal predecessors, (132), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 21:19:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 172 transitions. [2023-11-23 21:19:32,387 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 172 transitions. Word has length 42 [2023-11-23 21:19:32,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:32,388 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 172 transitions. [2023-11-23 21:19:32,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:19:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 172 transitions. [2023-11-23 21:19:32,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 21:19:32,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:32,389 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:32,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:32,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:19:32,604 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:32,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:32,604 INFO L85 PathProgramCache]: Analyzing trace with hash -900469139, now seen corresponding path program 1 times [2023-11-23 21:19:32,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:32,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697603205] [2023-11-23 21:19:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:32,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:32,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:32,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940842838] [2023-11-23 21:19:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:32,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:32,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:32,633 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:32,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 21:19:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:32,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:19:32,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 21:19:32,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:19:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 21:19:32,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:32,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697603205] [2023-11-23 21:19:32,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:32,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940842838] [2023-11-23 21:19:32,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940842838] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:19:32,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1111610870] [2023-11-23 21:19:32,814 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-23 21:19:32,814 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:19:32,815 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:19:32,815 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:19:32,815 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:19:34,578 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-11-23 21:19:34,579 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-23 21:19:34,581 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:19:37,004 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4249#(and (<= 1 |#StackHeapBarrier|) (<= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (= |ULTIMATE.start_main_~q~0#1| 0) (= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~d~0#1|) (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~d~0#1|))' at error location [2023-11-23 21:19:37,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:19:37,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:19:37,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-23 21:19:37,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277107220] [2023-11-23 21:19:37,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:19:37,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:19:37,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:37,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:19:37,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-11-23 21:19:37,006 INFO L87 Difference]: Start difference. First operand 133 states and 172 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 21:19:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:37,239 INFO L93 Difference]: Finished difference Result 251 states and 305 transitions. [2023-11-23 21:19:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:19:37,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 44 [2023-11-23 21:19:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:37,242 INFO L225 Difference]: With dead ends: 251 [2023-11-23 21:19:37,242 INFO L226 Difference]: Without dead ends: 249 [2023-11-23 21:19:37,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-11-23 21:19:37,243 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 153 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:37,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 189 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:19:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-23 21:19:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 187. [2023-11-23 21:19:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 137 states have (on average 1.4087591240875912) internal successors, (193), 154 states have internal predecessors, (193), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 21:19:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 253 transitions. [2023-11-23 21:19:37,272 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 253 transitions. Word has length 44 [2023-11-23 21:19:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:37,272 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 253 transitions. [2023-11-23 21:19:37,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 21:19:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 253 transitions. [2023-11-23 21:19:37,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 21:19:37,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:37,275 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:37,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:37,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 21:19:37,497 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:37,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:37,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1522967653, now seen corresponding path program 2 times [2023-11-23 21:19:37,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:37,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805266503] [2023-11-23 21:19:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:37,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:37,508 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:37,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135592567] [2023-11-23 21:19:37,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:19:37,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:37,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:37,510 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:37,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 21:19:37,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 21:19:37,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:19:37,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:19:37,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 21:19:37,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:19:37,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:37,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805266503] [2023-11-23 21:19:37,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:37,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135592567] [2023-11-23 21:19:37,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135592567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:19:37,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2098172876] [2023-11-23 21:19:37,843 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-23 21:19:37,843 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:19:37,843 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:19:37,843 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:19:37,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:19:39,313 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-11-23 21:19:39,314 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-23 21:19:39,315 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:19:40,976 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5012#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-11-23 21:19:40,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:19:40,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:19:40,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-23 21:19:40,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64946403] [2023-11-23 21:19:40,977 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 21:19:40,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:19:40,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:40,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:19:40,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2023-11-23 21:19:40,979 INFO L87 Difference]: Start difference. First operand 187 states and 253 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 21:19:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:41,226 INFO L93 Difference]: Finished difference Result 302 states and 391 transitions. [2023-11-23 21:19:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:19:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 55 [2023-11-23 21:19:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:41,230 INFO L225 Difference]: With dead ends: 302 [2023-11-23 21:19:41,230 INFO L226 Difference]: Without dead ends: 298 [2023-11-23 21:19:41,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2023-11-23 21:19:41,231 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 167 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:41,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 147 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:19:41,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-23 21:19:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 187. [2023-11-23 21:19:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 137 states have (on average 1.3941605839416058) internal successors, (191), 154 states have internal predecessors, (191), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 21:19:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 251 transitions. [2023-11-23 21:19:41,255 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 251 transitions. Word has length 55 [2023-11-23 21:19:41,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:41,256 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 251 transitions. [2023-11-23 21:19:41,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 21:19:41,256 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 251 transitions. [2023-11-23 21:19:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 21:19:41,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:41,257 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:41,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-23 21:19:41,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 21:19:41,478 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:41,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:41,478 INFO L85 PathProgramCache]: Analyzing trace with hash -135496324, now seen corresponding path program 1 times [2023-11-23 21:19:41,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:41,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276110238] [2023-11-23 21:19:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:41,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:41,500 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:41,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630427177] [2023-11-23 21:19:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:41,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:41,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:41,504 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:41,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:19:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:41,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:19:41,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 21:19:41,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:41,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:41,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276110238] [2023-11-23 21:19:41,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:41,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630427177] [2023-11-23 21:19:41,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630427177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:41,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:41,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:19:41,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309641340] [2023-11-23 21:19:41,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:41,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:19:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:41,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:19:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:41,615 INFO L87 Difference]: Start difference. First operand 187 states and 251 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 21:19:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:41,666 INFO L93 Difference]: Finished difference Result 187 states and 251 transitions. [2023-11-23 21:19:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:19:41,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 62 [2023-11-23 21:19:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:41,669 INFO L225 Difference]: With dead ends: 187 [2023-11-23 21:19:41,669 INFO L226 Difference]: Without dead ends: 186 [2023-11-23 21:19:41,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:41,670 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 4 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:41,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 101 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:19:41,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-23 21:19:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-11-23 21:19:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 153 states have internal predecessors, (188), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 21:19:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 248 transitions. [2023-11-23 21:19:41,691 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 248 transitions. Word has length 62 [2023-11-23 21:19:41,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:41,691 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 248 transitions. [2023-11-23 21:19:41,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 21:19:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 248 transitions. [2023-11-23 21:19:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-23 21:19:41,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:41,693 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:41,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:41,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 21:19:41,913 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:41,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:41,914 INFO L85 PathProgramCache]: Analyzing trace with hash 94581363, now seen corresponding path program 1 times [2023-11-23 21:19:41,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:41,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425508826] [2023-11-23 21:19:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:41,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:41,923 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:41,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703546901] [2023-11-23 21:19:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:41,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:41,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:41,925 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:41,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 21:19:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:41,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:19:41,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 21:19:42,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:42,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:42,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425508826] [2023-11-23 21:19:42,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:42,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703546901] [2023-11-23 21:19:42,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703546901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:42,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:42,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:19:42,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047969014] [2023-11-23 21:19:42,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:42,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:19:42,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:19:42,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:19:42,236 INFO L87 Difference]: Start difference. First operand 186 states and 248 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 21:19:42,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:42,438 INFO L93 Difference]: Finished difference Result 391 states and 521 transitions. [2023-11-23 21:19:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:19:42,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 63 [2023-11-23 21:19:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:42,441 INFO L225 Difference]: With dead ends: 391 [2023-11-23 21:19:42,441 INFO L226 Difference]: Without dead ends: 268 [2023-11-23 21:19:42,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:19:42,443 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 52 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:42,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 219 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:19:42,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-23 21:19:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 189. [2023-11-23 21:19:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 141 states have (on average 1.326241134751773) internal successors, (187), 156 states have internal predecessors, (187), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 21:19:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 247 transitions. [2023-11-23 21:19:42,477 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 247 transitions. Word has length 63 [2023-11-23 21:19:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:42,477 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 247 transitions. [2023-11-23 21:19:42,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 21:19:42,478 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 247 transitions. [2023-11-23 21:19:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 21:19:42,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:42,479 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:42,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:42,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 21:19:42,700 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:42,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1362944930, now seen corresponding path program 1 times [2023-11-23 21:19:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:42,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48158029] [2023-11-23 21:19:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:42,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:42,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:42,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188372073] [2023-11-23 21:19:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:42,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:42,720 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:42,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 21:19:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:42,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:19:42,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 21:19:42,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:42,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:42,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48158029] [2023-11-23 21:19:42,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:42,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188372073] [2023-11-23 21:19:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188372073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:42,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:42,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:19:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166489680] [2023-11-23 21:19:42,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:42,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:19:42,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:19:42,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:19:42,939 INFO L87 Difference]: Start difference. First operand 189 states and 247 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:19:43,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:43,089 INFO L93 Difference]: Finished difference Result 199 states and 259 transitions. [2023-11-23 21:19:43,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:19:43,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2023-11-23 21:19:43,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:43,093 INFO L225 Difference]: With dead ends: 199 [2023-11-23 21:19:43,093 INFO L226 Difference]: Without dead ends: 198 [2023-11-23 21:19:43,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:19:43,094 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 41 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:43,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 107 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:19:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-23 21:19:43,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2023-11-23 21:19:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 144 states have (on average 1.3194444444444444) internal successors, (190), 159 states have internal predecessors, (190), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 21:19:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 250 transitions. [2023-11-23 21:19:43,123 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 250 transitions. Word has length 64 [2023-11-23 21:19:43,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:43,124 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 250 transitions. [2023-11-23 21:19:43,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:19:43,125 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 250 transitions. [2023-11-23 21:19:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 21:19:43,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:43,126 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:43,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:43,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 21:19:43,340 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:43,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:43,340 INFO L85 PathProgramCache]: Analyzing trace with hash 698380245, now seen corresponding path program 1 times [2023-11-23 21:19:43,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:43,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560554515] [2023-11-23 21:19:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:43,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:43,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703389829] [2023-11-23 21:19:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:43,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:43,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:43,356 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:43,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 21:19:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:43,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:19:43,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 21:19:43,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:43,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:43,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560554515] [2023-11-23 21:19:43,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:43,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703389829] [2023-11-23 21:19:43,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703389829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:43,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:43,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:19:43,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957831832] [2023-11-23 21:19:43,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:43,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:19:43,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:43,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:19:43,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:19:43,534 INFO L87 Difference]: Start difference. First operand 192 states and 250 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:19:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:43,764 INFO L93 Difference]: Finished difference Result 198 states and 256 transitions. [2023-11-23 21:19:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:19:43,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2023-11-23 21:19:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:43,766 INFO L225 Difference]: With dead ends: 198 [2023-11-23 21:19:43,766 INFO L226 Difference]: Without dead ends: 196 [2023-11-23 21:19:43,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:19:43,767 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 22 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:43,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 101 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:19:43,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-23 21:19:43,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2023-11-23 21:19:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 147 states have (on average 1.2993197278911566) internal successors, (191), 162 states have internal predecessors, (191), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 21:19:43,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 251 transitions. [2023-11-23 21:19:43,816 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 251 transitions. Word has length 65 [2023-11-23 21:19:43,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:43,817 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 251 transitions. [2023-11-23 21:19:43,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:19:43,817 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 251 transitions. [2023-11-23 21:19:43,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 21:19:43,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:43,818 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:43,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:44,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:44,040 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-23 21:19:44,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:44,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1128519735, now seen corresponding path program 1 times [2023-11-23 21:19:44,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:44,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842618201] [2023-11-23 21:19:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:44,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:44,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:19:44,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603296951] [2023-11-23 21:19:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:44,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:44,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:44,053 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:44,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d677d-f2b4-4223-b88a-c075cfb82025/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 21:19:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:44,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-23 21:19:44,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:44,651 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 21:19:44,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:19:45,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:45,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842618201] [2023-11-23 21:19:45,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:19:45,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603296951] [2023-11-23 21:19:45,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603296951] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:19:45,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [221516419] [2023-11-23 21:19:45,249 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-11-23 21:19:45,249 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:19:45,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:19:45,250 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:19:45,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:19:49,170 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-23 21:19:49,171 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-23 21:19:49,172 INFO L180 IcfgInterpreter]: Interpretation finished