./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d17ed8dd7de3007f02b2c3df3a75e1fbb5469b0133c538c149df8a118a565d0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:49:05,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:49:05,396 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:49:05,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:49:05,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:49:05,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:49:05,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:49:05,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:49:05,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:49:05,453 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:49:05,453 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:49:05,454 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:49:05,454 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:49:05,455 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:49:05,456 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:49:05,456 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:49:05,457 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:49:05,457 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:49:05,458 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:49:05,458 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:49:05,459 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:49:05,460 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:49:05,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:49:05,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:49:05,462 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:49:05,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:49:05,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:49:05,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:49:05,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:49:05,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:49:05,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:49:05,473 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:49:05,473 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:49:05,473 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:49:05,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:49:05,474 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:49:05,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:49:05,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:49:05,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:49:05,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:49:05,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:49:05,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:49:05,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:49:05,478 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:49:05,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:49:05,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:49:05,479 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:49:05,479 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:49:05,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:49:05,480 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_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d17ed8dd7de3007f02b2c3df3a75e1fbb5469b0133c538c149df8a118a565d0 [2023-11-24 23:49:05,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:49:05,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:49:05,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:49:05,806 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:49:05,807 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:49:05,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound100.c [2023-11-24 23:49:08,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:49:09,066 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:49:09,067 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound100.c [2023-11-24 23:49:09,075 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/data/3b9c07e6b/63f6fd4173454d4291c9164d66eedea3/FLAG099a1622a [2023-11-24 23:49:09,091 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/data/3b9c07e6b/63f6fd4173454d4291c9164d66eedea3 [2023-11-24 23:49:09,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:49:09,096 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:49:09,097 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:49:09,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:49:09,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:49:09,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74abe2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09, skipping insertion in model container [2023-11-24 23:49:09,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,143 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:49:09,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:49:09,334 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:49:09,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:49:09,375 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:49:09,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09 WrapperNode [2023-11-24 23:49:09,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:49:09,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:49:09,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:49:09,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:49:09,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,439 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 110 [2023-11-24 23:49:09,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:49:09,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:49:09,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:49:09,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:49:09,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:49:09,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:49:09,500 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:49:09,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:49:09,501 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (1/1) ... [2023-11-24 23:49:09,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:49:09,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:09,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:49:09,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:49:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:49:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:49:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:49:09,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:49:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:49:09,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:49:09,681 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:49:09,695 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:49:10,118 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:49:10,171 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:49:10,171 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:49:10,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:10 BoogieIcfgContainer [2023-11-24 23:49:10,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:49:10,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:49:10,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:49:10,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:49:10,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:49:09" (1/3) ... [2023-11-24 23:49:10,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1ce8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:10, skipping insertion in model container [2023-11-24 23:49:10,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:09" (2/3) ... [2023-11-24 23:49:10,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1ce8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:10, skipping insertion in model container [2023-11-24 23:49:10,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:10" (3/3) ... [2023-11-24 23:49:10,183 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound100.c [2023-11-24 23:49:10,206 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:49:10,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-24 23:49:10,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:49:10,271 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;@6b4cd4fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:49:10,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-24 23:49:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 97 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:49:10,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:49:10,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:10,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:49:10,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:10,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash 191333, now seen corresponding path program 1 times [2023-11-24 23:49:10,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:10,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350841616] [2023-11-24 23:49:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:10,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:10,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:10,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350841616] [2023-11-24 23:49:10,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-24 23:49:10,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357883176] [2023-11-24 23:49:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:10,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:10,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:10,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:10,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:49:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:10,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:49:10,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:10,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:10,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357883176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:10,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:10,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:10,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249099309] [2023-11-24 23:49:10,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:10,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:49:10,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:10,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:49:10,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:49:10,671 INFO L87 Difference]: Start difference. First operand has 102 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 97 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:10,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:10,723 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2023-11-24 23:49:10,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:49:10,727 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-24 23:49:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:10,737 INFO L225 Difference]: With dead ends: 116 [2023-11-24 23:49:10,737 INFO L226 Difference]: Without dead ends: 99 [2023-11-24 23:49:10,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:49:10,749 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:10,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:49:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-24 23:49:10,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-24 23:49:10,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 52 states have (on average 1.9230769230769231) internal successors, (100), 95 states have internal predecessors, (100), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:49:10,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2023-11-24 23:49:10,820 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 3 [2023-11-24 23:49:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:10,821 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2023-11-24 23:49:10,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2023-11-24 23:49:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:49:10,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:10,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:49:10,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:11,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:49:11,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:11,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:11,031 INFO L85 PathProgramCache]: Analyzing trace with hash 187844, now seen corresponding path program 1 times [2023-11-24 23:49:11,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:11,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466858645] [2023-11-24 23:49:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:11,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:11,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:11,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466858645] [2023-11-24 23:49:11,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466858645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:11,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:11,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:11,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800760427] [2023-11-24 23:49:11,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:11,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:11,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:11,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:11,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:11,180 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:11,251 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2023-11-24 23:49:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:11,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-24 23:49:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:11,254 INFO L225 Difference]: With dead ends: 99 [2023-11-24 23:49:11,254 INFO L226 Difference]: Without dead ends: 98 [2023-11-24 23:49:11,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:49:11,256 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 104 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:11,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 190 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:49:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-24 23:49:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-24 23:49:11,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 94 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:49:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2023-11-24 23:49:11,269 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 3 [2023-11-24 23:49:11,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:11,270 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2023-11-24 23:49:11,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:11,270 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2023-11-24 23:49:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:49:11,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:11,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:49:11,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:49:11,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:11,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:11,273 INFO L85 PathProgramCache]: Analyzing trace with hash 5823212, now seen corresponding path program 1 times [2023-11-24 23:49:11,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:11,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379619248] [2023-11-24 23:49:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:11,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:11,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:11,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379619248] [2023-11-24 23:49:11,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379619248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:11,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:11,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:11,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510892555] [2023-11-24 23:49:11,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:11,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:11,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:11,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:11,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:11,391 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:11,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:11,440 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2023-11-24 23:49:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:49:11,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-24 23:49:11,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:11,448 INFO L225 Difference]: With dead ends: 114 [2023-11-24 23:49:11,449 INFO L226 Difference]: Without dead ends: 102 [2023-11-24 23:49:11,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:49:11,451 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 3 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:11,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 290 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:49:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-24 23:49:11,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-11-24 23:49:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 98 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:49:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2023-11-24 23:49:11,476 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 4 [2023-11-24 23:49:11,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:11,477 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2023-11-24 23:49:11,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:11,477 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2023-11-24 23:49:11,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:49:11,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:11,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:49:11,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:49:11,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:11,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:11,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1301141134, now seen corresponding path program 1 times [2023-11-24 23:49:11,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:11,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616485143] [2023-11-24 23:49:11,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:11,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:11,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:11,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048304195] [2023-11-24 23:49:11,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:11,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:11,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:11,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:11,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:49:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:11,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:49:11,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:11,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:11,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:11,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616485143] [2023-11-24 23:49:11,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:11,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048304195] [2023-11-24 23:49:11,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048304195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:11,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:11,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:49:11,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699904937] [2023-11-24 23:49:11,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:11,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:11,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:11,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:11,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:11,665 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:11,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:11,941 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2023-11-24 23:49:11,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:11,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 23:49:11,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:11,948 INFO L225 Difference]: With dead ends: 152 [2023-11-24 23:49:11,949 INFO L226 Difference]: Without dead ends: 143 [2023-11-24 23:49:11,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:11,957 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 37 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:11,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 89 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:49:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-24 23:49:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 127. [2023-11-24 23:49:11,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 121 states have internal predecessors, (140), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:49:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2023-11-24 23:49:11,990 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 6 [2023-11-24 23:49:11,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:11,990 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2023-11-24 23:49:11,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2023-11-24 23:49:11,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:49:11,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:11,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:11,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-24 23:49:12,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:12,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:12,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1680669547, now seen corresponding path program 1 times [2023-11-24 23:49:12,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:12,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783058302] [2023-11-24 23:49:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:12,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:12,207 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:12,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865956702] [2023-11-24 23:49:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:12,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:12,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:12,210 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:12,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:49:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:12,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:49:12,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:12,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:12,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:12,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783058302] [2023-11-24 23:49:12,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:12,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865956702] [2023-11-24 23:49:12,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865956702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:12,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:12,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:49:12,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99100578] [2023-11-24 23:49:12,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:12,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:12,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:12,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:12,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:12,330 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:12,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:12,548 INFO L93 Difference]: Finished difference Result 194 states and 221 transitions. [2023-11-24 23:49:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:12,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 23:49:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:12,551 INFO L225 Difference]: With dead ends: 194 [2023-11-24 23:49:12,551 INFO L226 Difference]: Without dead ends: 180 [2023-11-24 23:49:12,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:12,553 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 47 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:12,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 88 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:49:12,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-24 23:49:12,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 157. [2023-11-24 23:49:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 150 states have internal predecessors, (188), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:49:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2023-11-24 23:49:12,569 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 198 transitions. Word has length 7 [2023-11-24 23:49:12,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:12,570 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 198 transitions. [2023-11-24 23:49:12,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 198 transitions. [2023-11-24 23:49:12,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:49:12,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:12,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:12,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:12,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:12,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:12,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:12,779 INFO L85 PathProgramCache]: Analyzing trace with hash 561148464, now seen corresponding path program 1 times [2023-11-24 23:49:12,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:12,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211037696] [2023-11-24 23:49:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:12,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:12,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:12,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290273528] [2023-11-24 23:49:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:12,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:12,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:12,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:12,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:49:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:12,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:49:12,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:12,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:12,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:12,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211037696] [2023-11-24 23:49:12,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:12,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290273528] [2023-11-24 23:49:12,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290273528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:12,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:12,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:12,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934226544] [2023-11-24 23:49:12,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:12,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:12,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:12,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:12,905 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:13,148 INFO L93 Difference]: Finished difference Result 263 states and 314 transitions. [2023-11-24 23:49:13,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:13,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-24 23:49:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:13,151 INFO L225 Difference]: With dead ends: 263 [2023-11-24 23:49:13,151 INFO L226 Difference]: Without dead ends: 257 [2023-11-24 23:49:13,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:13,152 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 135 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:13,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 135 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:49:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-24 23:49:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 208. [2023-11-24 23:49:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 157 states have (on average 1.7707006369426752) internal successors, (278), 199 states have internal predecessors, (278), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:49:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 292 transitions. [2023-11-24 23:49:13,194 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 292 transitions. Word has length 8 [2023-11-24 23:49:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:13,194 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 292 transitions. [2023-11-24 23:49:13,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:13,195 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 292 transitions. [2023-11-24 23:49:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:49:13,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:13,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:13,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:13,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:13,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:13,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash 215733261, now seen corresponding path program 1 times [2023-11-24 23:49:13,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:13,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859115348] [2023-11-24 23:49:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:13,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:13,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:13,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188406212] [2023-11-24 23:49:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:13,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:13,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:13,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:13,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:49:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:13,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:49:13,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:13,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:13,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:13,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859115348] [2023-11-24 23:49:13,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:13,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188406212] [2023-11-24 23:49:13,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188406212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:13,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:13,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:13,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140298518] [2023-11-24 23:49:13,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:13,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:13,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:13,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:13,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:13,534 INFO L87 Difference]: Start difference. First operand 208 states and 292 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:13,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:13,769 INFO L93 Difference]: Finished difference Result 257 states and 302 transitions. [2023-11-24 23:49:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:13,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-24 23:49:13,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:13,771 INFO L225 Difference]: With dead ends: 257 [2023-11-24 23:49:13,772 INFO L226 Difference]: Without dead ends: 252 [2023-11-24 23:49:13,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:13,773 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 131 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:13,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 127 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:49:13,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-24 23:49:13,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 204. [2023-11-24 23:49:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 154 states have (on average 1.7532467532467533) internal successors, (270), 196 states have internal predecessors, (270), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 23:49:13,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 282 transitions. [2023-11-24 23:49:13,793 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 282 transitions. Word has length 9 [2023-11-24 23:49:13,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:13,794 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 282 transitions. [2023-11-24 23:49:13,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 282 transitions. [2023-11-24 23:49:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:49:13,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:13,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:13,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:14,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:14,002 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:14,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1902203438, now seen corresponding path program 1 times [2023-11-24 23:49:14,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:14,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000877904] [2023-11-24 23:49:14,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:14,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:14,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:14,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883795328] [2023-11-24 23:49:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:14,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:14,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:14,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:14,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:49:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:14,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:14,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:14,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:14,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:14,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000877904] [2023-11-24 23:49:14,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:14,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883795328] [2023-11-24 23:49:14,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883795328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:14,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:14,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:14,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135168673] [2023-11-24 23:49:14,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:14,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:14,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:14,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:14,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:14,159 INFO L87 Difference]: Start difference. First operand 204 states and 282 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:15,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:15,340 INFO L93 Difference]: Finished difference Result 337 states and 438 transitions. [2023-11-24 23:49:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:15,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-24 23:49:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:15,345 INFO L225 Difference]: With dead ends: 337 [2023-11-24 23:49:15,345 INFO L226 Difference]: Without dead ends: 336 [2023-11-24 23:49:15,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:15,347 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 96 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:15,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 161 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 23:49:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-24 23:49:15,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 230. [2023-11-24 23:49:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 179 states have (on average 1.7374301675977655) internal successors, (311), 221 states have internal predecessors, (311), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:49:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 325 transitions. [2023-11-24 23:49:15,365 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 325 transitions. Word has length 10 [2023-11-24 23:49:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:15,366 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 325 transitions. [2023-11-24 23:49:15,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:15,366 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 325 transitions. [2023-11-24 23:49:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:49:15,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:15,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:15,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-24 23:49:15,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:15,573 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:15,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:15,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1161235631, now seen corresponding path program 1 times [2023-11-24 23:49:15,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:15,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298478352] [2023-11-24 23:49:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:15,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:15,581 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:15,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578959194] [2023-11-24 23:49:15,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:15,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:15,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:15,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:15,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:49:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:15,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:15,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:15,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:15,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:15,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298478352] [2023-11-24 23:49:15,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:15,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578959194] [2023-11-24 23:49:15,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578959194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:15,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:15,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:15,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766207136] [2023-11-24 23:49:15,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:15,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:15,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:15,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:15,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:15,672 INFO L87 Difference]: Start difference. First operand 230 states and 325 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:17,544 INFO L93 Difference]: Finished difference Result 336 states and 436 transitions. [2023-11-24 23:49:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:17,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 23:49:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:17,547 INFO L225 Difference]: With dead ends: 336 [2023-11-24 23:49:17,548 INFO L226 Difference]: Without dead ends: 335 [2023-11-24 23:49:17,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:17,549 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 94 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:17,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 166 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-24 23:49:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-24 23:49:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 230. [2023-11-24 23:49:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 179 states have (on average 1.7262569832402235) internal successors, (309), 221 states have internal predecessors, (309), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:49:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 323 transitions. [2023-11-24 23:49:17,564 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 323 transitions. Word has length 11 [2023-11-24 23:49:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:17,565 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 323 transitions. [2023-11-24 23:49:17,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 323 transitions. [2023-11-24 23:49:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:49:17,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:17,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:17,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:17,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:17,772 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:17,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:17,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1638566260, now seen corresponding path program 1 times [2023-11-24 23:49:17,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:17,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517508426] [2023-11-24 23:49:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:17,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:17,792 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730741087] [2023-11-24 23:49:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:17,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:17,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:17,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:17,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:49:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:17,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:49:17,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:17,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:17,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:17,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517508426] [2023-11-24 23:49:17,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:17,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730741087] [2023-11-24 23:49:17,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730741087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:17,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:17,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:49:17,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536074010] [2023-11-24 23:49:17,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:17,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:17,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:17,941 INFO L87 Difference]: Start difference. First operand 230 states and 323 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:18,086 INFO L93 Difference]: Finished difference Result 230 states and 323 transitions. [2023-11-24 23:49:18,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:18,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-24 23:49:18,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:18,089 INFO L225 Difference]: With dead ends: 230 [2023-11-24 23:49:18,089 INFO L226 Difference]: Without dead ends: 228 [2023-11-24 23:49:18,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:18,090 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 85 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:18,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 95 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:49:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-24 23:49:18,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2023-11-24 23:49:18,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 179 states have (on average 1.681564245810056) internal successors, (301), 219 states have internal predecessors, (301), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:49:18,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 315 transitions. [2023-11-24 23:49:18,106 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 315 transitions. Word has length 12 [2023-11-24 23:49:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:18,106 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 315 transitions. [2023-11-24 23:49:18,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 315 transitions. [2023-11-24 23:49:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:49:18,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:18,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:18,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-24 23:49:18,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:49:18,313 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:18,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash -744053423, now seen corresponding path program 1 times [2023-11-24 23:49:18,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:18,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47431782] [2023-11-24 23:49:18,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:18,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:18,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:18,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414729785] [2023-11-24 23:49:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:18,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:18,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:18,334 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:18,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:49:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:18,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:49:18,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:18,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:18,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:18,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47431782] [2023-11-24 23:49:18,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:18,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414729785] [2023-11-24 23:49:18,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414729785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:18,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:18,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:49:18,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031731820] [2023-11-24 23:49:18,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:18,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:18,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:18,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:18,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:18,473 INFO L87 Difference]: Start difference. First operand 228 states and 315 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:18,493 INFO L93 Difference]: Finished difference Result 228 states and 315 transitions. [2023-11-24 23:49:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-24 23:49:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:18,496 INFO L225 Difference]: With dead ends: 228 [2023-11-24 23:49:18,496 INFO L226 Difference]: Without dead ends: 224 [2023-11-24 23:49:18,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:18,498 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 82 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:18,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 95 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:49:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-24 23:49:18,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2023-11-24 23:49:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 177 states have (on average 1.6327683615819208) internal successors, (289), 215 states have internal predecessors, (289), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:49:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 303 transitions. [2023-11-24 23:49:18,516 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 303 transitions. Word has length 13 [2023-11-24 23:49:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:18,517 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 303 transitions. [2023-11-24 23:49:18,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:18,517 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 303 transitions. [2023-11-24 23:49:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 23:49:18,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:18,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:18,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:18,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 23:49:18,724 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:18,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:18,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1842379274, now seen corresponding path program 1 times [2023-11-24 23:49:18,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:18,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918323164] [2023-11-24 23:49:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:18,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:18,734 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:18,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812048972] [2023-11-24 23:49:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:18,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:18,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:18,736 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:18,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:49:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:18,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:49:18,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:18,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:18,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:18,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:18,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918323164] [2023-11-24 23:49:18,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:18,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812048972] [2023-11-24 23:49:18,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812048972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:18,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:18,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:18,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544825287] [2023-11-24 23:49:18,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:18,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:18,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:18,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:18,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:18,895 INFO L87 Difference]: Start difference. First operand 224 states and 303 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:19,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:19,043 INFO L93 Difference]: Finished difference Result 236 states and 303 transitions. [2023-11-24 23:49:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:19,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-11-24 23:49:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:19,046 INFO L225 Difference]: With dead ends: 236 [2023-11-24 23:49:19,046 INFO L226 Difference]: Without dead ends: 235 [2023-11-24 23:49:19,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:19,048 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 29 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:19,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 103 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:49:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-24 23:49:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 224. [2023-11-24 23:49:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 177 states have (on average 1.6271186440677967) internal successors, (288), 215 states have internal predecessors, (288), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:49:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 302 transitions. [2023-11-24 23:49:19,062 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 302 transitions. Word has length 22 [2023-11-24 23:49:19,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:19,063 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 302 transitions. [2023-11-24 23:49:19,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 302 transitions. [2023-11-24 23:49:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 23:49:19,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:19,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:19,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:19,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:49:19,270 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:19,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:19,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1279182749, now seen corresponding path program 1 times [2023-11-24 23:49:19,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:19,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711935732] [2023-11-24 23:49:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:19,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:19,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:19,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911435254] [2023-11-24 23:49:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:19,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:19,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:19,285 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:19,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:49:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:19,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:49:19,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:19,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:19,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:19,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711935732] [2023-11-24 23:49:19,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:19,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911435254] [2023-11-24 23:49:19,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911435254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:19,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:19,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:19,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839215632] [2023-11-24 23:49:19,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:19,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:19,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:19,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:19,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:19,448 INFO L87 Difference]: Start difference. First operand 224 states and 302 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:20,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:20,142 INFO L93 Difference]: Finished difference Result 264 states and 309 transitions. [2023-11-24 23:49:20,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:20,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-24 23:49:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:20,144 INFO L225 Difference]: With dead ends: 264 [2023-11-24 23:49:20,144 INFO L226 Difference]: Without dead ends: 260 [2023-11-24 23:49:20,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:20,146 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 62 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:20,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 69 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:49:20,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-24 23:49:20,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 221. [2023-11-24 23:49:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 174 states have (on average 1.6091954022988506) internal successors, (280), 212 states have internal predecessors, (280), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:49:20,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 294 transitions. [2023-11-24 23:49:20,160 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 294 transitions. Word has length 23 [2023-11-24 23:49:20,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:20,161 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 294 transitions. [2023-11-24 23:49:20,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:20,161 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 294 transitions. [2023-11-24 23:49:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 23:49:20,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:20,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:20,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:20,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:20,375 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:20,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:20,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1292573803, now seen corresponding path program 1 times [2023-11-24 23:49:20,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:20,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565026281] [2023-11-24 23:49:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:20,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:20,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:20,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149551170] [2023-11-24 23:49:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:20,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:20,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:20,391 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:20,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-24 23:49:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:20,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:49:20,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:20,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:20,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:20,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565026281] [2023-11-24 23:49:20,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:20,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149551170] [2023-11-24 23:49:20,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149551170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:20,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:20,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:49:20,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866257918] [2023-11-24 23:49:20,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:20,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:20,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:20,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:20,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:20,569 INFO L87 Difference]: Start difference. First operand 221 states and 294 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:21,121 INFO L93 Difference]: Finished difference Result 281 states and 359 transitions. [2023-11-24 23:49:21,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:21,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-24 23:49:21,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:21,124 INFO L225 Difference]: With dead ends: 281 [2023-11-24 23:49:21,124 INFO L226 Difference]: Without dead ends: 277 [2023-11-24 23:49:21,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:21,126 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 72 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:21,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 113 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:49:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-24 23:49:21,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 248. [2023-11-24 23:49:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 200 states have (on average 1.595) internal successors, (319), 238 states have internal predecessors, (319), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 23:49:21,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 335 transitions. [2023-11-24 23:49:21,141 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 335 transitions. Word has length 23 [2023-11-24 23:49:21,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:21,142 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 335 transitions. [2023-11-24 23:49:21,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:21,142 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 335 transitions. [2023-11-24 23:49:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-24 23:49:21,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:21,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:21,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:21,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:21,349 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:21,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:21,349 INFO L85 PathProgramCache]: Analyzing trace with hash 999959660, now seen corresponding path program 1 times [2023-11-24 23:49:21,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:21,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994855143] [2023-11-24 23:49:21,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:21,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:21,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:21,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226469300] [2023-11-24 23:49:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:21,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:21,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:21,369 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:21,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-24 23:49:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:21,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:21,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:21,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:21,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:21,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994855143] [2023-11-24 23:49:21,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:21,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226469300] [2023-11-24 23:49:21,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226469300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:21,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:21,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:49:21,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178894620] [2023-11-24 23:49:21,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:21,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:21,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:21,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:21,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:21,479 INFO L87 Difference]: Start difference. First operand 248 states and 335 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:22,383 INFO L93 Difference]: Finished difference Result 337 states and 428 transitions. [2023-11-24 23:49:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:22,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-11-24 23:49:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:22,386 INFO L225 Difference]: With dead ends: 337 [2023-11-24 23:49:22,386 INFO L226 Difference]: Without dead ends: 336 [2023-11-24 23:49:22,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:22,387 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 116 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:22,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 165 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:49:22,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-24 23:49:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 258. [2023-11-24 23:49:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 210 states have (on average 1.5904761904761904) internal successors, (334), 248 states have internal predecessors, (334), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 23:49:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 350 transitions. [2023-11-24 23:49:22,403 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 350 transitions. Word has length 24 [2023-11-24 23:49:22,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:22,404 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 350 transitions. [2023-11-24 23:49:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 350 transitions. [2023-11-24 23:49:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-24 23:49:22,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:22,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:22,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:22,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:22,611 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:22,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:22,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1415082349, now seen corresponding path program 1 times [2023-11-24 23:49:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:22,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962107952] [2023-11-24 23:49:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:22,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:22,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:22,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740042155] [2023-11-24 23:49:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:22,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:22,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:22,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:22,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-24 23:49:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:22,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:49:22,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:22,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:22,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:22,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962107952] [2023-11-24 23:49:22,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:22,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740042155] [2023-11-24 23:49:22,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740042155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:22,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:22,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:22,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282934118] [2023-11-24 23:49:22,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:22,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:22,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:22,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:22,762 INFO L87 Difference]: Start difference. First operand 258 states and 350 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:22,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:22,957 INFO L93 Difference]: Finished difference Result 294 states and 357 transitions. [2023-11-24 23:49:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:22,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-11-24 23:49:22,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:22,960 INFO L225 Difference]: With dead ends: 294 [2023-11-24 23:49:22,960 INFO L226 Difference]: Without dead ends: 290 [2023-11-24 23:49:22,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:22,961 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 57 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:22,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 78 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:49:22,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-24 23:49:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 258. [2023-11-24 23:49:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 210 states have (on average 1.5666666666666667) internal successors, (329), 248 states have internal predecessors, (329), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 23:49:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 345 transitions. [2023-11-24 23:49:22,976 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 345 transitions. Word has length 24 [2023-11-24 23:49:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:22,976 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 345 transitions. [2023-11-24 23:49:22,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 345 transitions. [2023-11-24 23:49:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 23:49:22,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:22,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:22,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:23,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-24 23:49:23,183 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:23,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash 933978495, now seen corresponding path program 1 times [2023-11-24 23:49:23,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:23,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597814419] [2023-11-24 23:49:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:23,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:23,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:23,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899194154] [2023-11-24 23:49:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:23,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:23,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:23,199 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:23,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-24 23:49:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:23,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:23,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:23,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:23,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:23,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597814419] [2023-11-24 23:49:23,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899194154] [2023-11-24 23:49:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899194154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:23,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:23,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:49:23,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481154985] [2023-11-24 23:49:23,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:23,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:23,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:23,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:23,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:23,316 INFO L87 Difference]: Start difference. First operand 258 states and 345 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:23,828 INFO L93 Difference]: Finished difference Result 336 states and 420 transitions. [2023-11-24 23:49:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:23,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-24 23:49:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:23,831 INFO L225 Difference]: With dead ends: 336 [2023-11-24 23:49:23,832 INFO L226 Difference]: Without dead ends: 335 [2023-11-24 23:49:23,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:23,833 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 112 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:23,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 179 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:49:23,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-24 23:49:23,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 260. [2023-11-24 23:49:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 212 states have (on average 1.5613207547169812) internal successors, (331), 250 states have internal predecessors, (331), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 23:49:23,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 347 transitions. [2023-11-24 23:49:23,849 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 347 transitions. Word has length 25 [2023-11-24 23:49:23,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:23,850 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 347 transitions. [2023-11-24 23:49:23,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:23,850 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 347 transitions. [2023-11-24 23:49:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 23:49:23,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:23,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:23,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:24,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-24 23:49:24,057 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:24,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:24,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1332048365, now seen corresponding path program 1 times [2023-11-24 23:49:24,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:24,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749038701] [2023-11-24 23:49:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:24,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:24,069 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:24,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61134354] [2023-11-24 23:49:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:24,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:24,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:24,073 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:24,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-24 23:49:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:24,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:49:24,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:24,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:24,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:24,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749038701] [2023-11-24 23:49:24,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:24,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61134354] [2023-11-24 23:49:24,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61134354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:24,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:24,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:49:24,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426883359] [2023-11-24 23:49:24,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:24,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:49:24,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:49:24,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:49:24,207 INFO L87 Difference]: Start difference. First operand 260 states and 347 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:24,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:24,984 INFO L93 Difference]: Finished difference Result 303 states and 407 transitions. [2023-11-24 23:49:24,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:49:24,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-24 23:49:24,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:24,987 INFO L225 Difference]: With dead ends: 303 [2023-11-24 23:49:24,987 INFO L226 Difference]: Without dead ends: 296 [2023-11-24 23:49:24,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:49:24,988 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 136 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:24,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 78 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:49:24,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-11-24 23:49:25,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 240. [2023-11-24 23:49:25,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 199 states have (on average 1.4824120603015076) internal successors, (295), 230 states have internal predecessors, (295), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 23:49:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 311 transitions. [2023-11-24 23:49:25,004 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 311 transitions. Word has length 25 [2023-11-24 23:49:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:25,004 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 311 transitions. [2023-11-24 23:49:25,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 311 transitions. [2023-11-24 23:49:25,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 23:49:25,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:25,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:25,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-24 23:49:25,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-24 23:49:25,217 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:25,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:25,218 INFO L85 PathProgramCache]: Analyzing trace with hash 917879981, now seen corresponding path program 1 times [2023-11-24 23:49:25,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:25,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868119986] [2023-11-24 23:49:25,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:25,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:25,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:25,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785450345] [2023-11-24 23:49:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:25,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:25,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:25,238 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:25,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-24 23:49:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:25,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:25,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:25,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:25,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:25,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868119986] [2023-11-24 23:49:25,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:25,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785450345] [2023-11-24 23:49:25,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785450345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:25,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:25,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:49:25,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119213896] [2023-11-24 23:49:25,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:25,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:25,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:25,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:25,357 INFO L87 Difference]: Start difference. First operand 240 states and 311 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:25,895 INFO L93 Difference]: Finished difference Result 311 states and 380 transitions. [2023-11-24 23:49:25,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:25,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-24 23:49:25,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:25,898 INFO L225 Difference]: With dead ends: 311 [2023-11-24 23:49:25,898 INFO L226 Difference]: Without dead ends: 310 [2023-11-24 23:49:25,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:25,900 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 101 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:25,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 152 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:49:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-24 23:49:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 252. [2023-11-24 23:49:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 211 states have (on average 1.4786729857819905) internal successors, (312), 242 states have internal predecessors, (312), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 23:49:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 328 transitions. [2023-11-24 23:49:25,915 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 328 transitions. Word has length 25 [2023-11-24 23:49:25,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:25,915 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 328 transitions. [2023-11-24 23:49:25,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:25,916 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 328 transitions. [2023-11-24 23:49:25,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 23:49:25,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:25,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:25,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:26,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:26,123 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:26,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:26,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1656173507, now seen corresponding path program 1 times [2023-11-24 23:49:26,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:26,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395590273] [2023-11-24 23:49:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:26,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:26,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257869955] [2023-11-24 23:49:26,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:26,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:26,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:26,133 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:26,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-24 23:49:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:26,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:49:26,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:26,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:26,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:26,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395590273] [2023-11-24 23:49:26,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:26,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257869955] [2023-11-24 23:49:26,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257869955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:26,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:26,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:49:26,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515631331] [2023-11-24 23:49:26,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:26,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:49:26,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:26,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:49:26,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:49:26,294 INFO L87 Difference]: Start difference. First operand 252 states and 328 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:26,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:26,755 INFO L93 Difference]: Finished difference Result 287 states and 368 transitions. [2023-11-24 23:49:26,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:49:26,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-24 23:49:26,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:26,757 INFO L225 Difference]: With dead ends: 287 [2023-11-24 23:49:26,757 INFO L226 Difference]: Without dead ends: 279 [2023-11-24 23:49:26,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:49:26,759 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 164 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:26,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 48 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:49:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-24 23:49:26,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 244. [2023-11-24 23:49:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 211 states have (on average 1.4123222748815165) internal successors, (298), 234 states have internal predecessors, (298), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 23:49:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 314 transitions. [2023-11-24 23:49:26,784 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 314 transitions. Word has length 26 [2023-11-24 23:49:26,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:26,784 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 314 transitions. [2023-11-24 23:49:26,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:26,784 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 314 transitions. [2023-11-24 23:49:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 23:49:26,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:26,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:26,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:26,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:26,991 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:26,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:26,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1610491537, now seen corresponding path program 1 times [2023-11-24 23:49:26,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:26,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162469412] [2023-11-24 23:49:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:26,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:26,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:26,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729748773] [2023-11-24 23:49:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:26,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:26,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:27,000 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:27,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-24 23:49:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:27,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:27,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:27,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:27,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:27,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162469412] [2023-11-24 23:49:27,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:27,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729748773] [2023-11-24 23:49:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729748773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:27,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:27,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:49:27,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370923108] [2023-11-24 23:49:27,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:27,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:27,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:27,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:27,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:27,108 INFO L87 Difference]: Start difference. First operand 244 states and 314 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:27,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:27,442 INFO L93 Difference]: Finished difference Result 294 states and 358 transitions. [2023-11-24 23:49:27,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:27,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-24 23:49:27,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:27,444 INFO L225 Difference]: With dead ends: 294 [2023-11-24 23:49:27,444 INFO L226 Difference]: Without dead ends: 293 [2023-11-24 23:49:27,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:27,446 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 89 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:27,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 137 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:49:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-24 23:49:27,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 246. [2023-11-24 23:49:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 213 states have (on average 1.408450704225352) internal successors, (300), 236 states have internal predecessors, (300), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 23:49:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 316 transitions. [2023-11-24 23:49:27,461 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 316 transitions. Word has length 26 [2023-11-24 23:49:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:27,461 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 316 transitions. [2023-11-24 23:49:27,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 316 transitions. [2023-11-24 23:49:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 23:49:27,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:27,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:27,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:27,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-24 23:49:27,667 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:49:27,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:27,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1540396816, now seen corresponding path program 1 times [2023-11-24 23:49:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761646633] [2023-11-24 23:49:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:27,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:27,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147822800] [2023-11-24 23:49:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:27,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:27,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:27,678 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:27,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-24 23:49:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:27,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:49:27,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:27,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:27,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:27,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761646633] [2023-11-24 23:49:27,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:27,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147822800] [2023-11-24 23:49:27,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147822800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:49:27,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [764399680] [2023-11-24 23:49:27,900 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-24 23:49:27,900 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:49:27,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:49:27,913 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:49:27,913 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:49:34,376 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2023-11-24 23:49:34,518 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:50:01,414 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11420#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= |ULTIMATE.start_main_~q~0#1| 0) (= ~counter~0 |ULTIMATE.start_main_#t~post6#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2023-11-24 23:50:01,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:50:01,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:50:01,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-24 23:50:01,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009450117] [2023-11-24 23:50:01,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:50:01,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 23:50:01,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:01,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 23:50:01,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=670, Unknown=8, NotChecked=0, Total=812 [2023-11-24 23:50:01,417 INFO L87 Difference]: Start difference. First operand 246 states and 316 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:50:01,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:01,621 INFO L93 Difference]: Finished difference Result 672 states and 855 transitions. [2023-11-24 23:50:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:50:01,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-11-24 23:50:01,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:01,625 INFO L225 Difference]: With dead ends: 672 [2023-11-24 23:50:01,626 INFO L226 Difference]: Without dead ends: 658 [2023-11-24 23:50:01,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=204, Invalid=1048, Unknown=8, NotChecked=0, Total=1260 [2023-11-24 23:50:01,629 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 311 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:01,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 619 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:50:01,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-11-24 23:50:01,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 603. [2023-11-24 23:50:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 555 states have (on average 1.4) internal successors, (777), 581 states have internal predecessors, (777), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-24 23:50:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 817 transitions. [2023-11-24 23:50:01,668 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 817 transitions. Word has length 27 [2023-11-24 23:50:01,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:01,668 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 817 transitions. [2023-11-24 23:50:01,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:50:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 817 transitions. [2023-11-24 23:50:01,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 23:50:01,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:01,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:01,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:01,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:01,874 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:50:01,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:01,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1442378642, now seen corresponding path program 1 times [2023-11-24 23:50:01,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:01,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48127840] [2023-11-24 23:50:01,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:01,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:01,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:50:01,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581372629] [2023-11-24 23:50:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:01,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:01,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:01,883 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:01,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-24 23:50:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:01,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:50:01,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:02,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:02,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:02,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48127840] [2023-11-24 23:50:02,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:50:02,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581372629] [2023-11-24 23:50:02,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581372629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:02,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:02,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:02,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358108583] [2023-11-24 23:50:02,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:02,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:02,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:02,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:02,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:02,220 INFO L87 Difference]: Start difference. First operand 603 states and 817 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:03,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:03,551 INFO L93 Difference]: Finished difference Result 805 states and 1074 transitions. [2023-11-24 23:50:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:50:03,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-11-24 23:50:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:03,558 INFO L225 Difference]: With dead ends: 805 [2023-11-24 23:50:03,559 INFO L226 Difference]: Without dead ends: 795 [2023-11-24 23:50:03,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:50:03,560 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 77 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:03,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 120 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 23:50:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-11-24 23:50:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 687. [2023-11-24 23:50:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 637 states have (on average 1.390894819466248) internal successors, (886), 663 states have internal predecessors, (886), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-24 23:50:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 930 transitions. [2023-11-24 23:50:03,606 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 930 transitions. Word has length 29 [2023-11-24 23:50:03,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:03,607 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 930 transitions. [2023-11-24 23:50:03,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:03,607 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 930 transitions. [2023-11-24 23:50:03,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 23:50:03,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:03,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:03,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:03,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:03,815 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:50:03,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1519488497, now seen corresponding path program 1 times [2023-11-24 23:50:03,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:03,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725182707] [2023-11-24 23:50:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:03,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:50:03,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785580505] [2023-11-24 23:50:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:03,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:03,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:03,825 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:03,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-24 23:50:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:03,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:50:03,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:04,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:04,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:04,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725182707] [2023-11-24 23:50:04,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:50:04,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785580505] [2023-11-24 23:50:04,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785580505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:04,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:04,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:50:04,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055154995] [2023-11-24 23:50:04,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:04,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:50:04,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:04,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:50:04,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:50:04,097 INFO L87 Difference]: Start difference. First operand 687 states and 930 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:05,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:05,208 INFO L93 Difference]: Finished difference Result 832 states and 1106 transitions. [2023-11-24 23:50:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:50:05,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-11-24 23:50:05,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:05,213 INFO L225 Difference]: With dead ends: 832 [2023-11-24 23:50:05,214 INFO L226 Difference]: Without dead ends: 828 [2023-11-24 23:50:05,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:50:05,215 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 70 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:05,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 100 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 23:50:05,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-11-24 23:50:05,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 672. [2023-11-24 23:50:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 623 states have (on average 1.3804173354735152) internal successors, (860), 649 states have internal predecessors, (860), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-24 23:50:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 902 transitions. [2023-11-24 23:50:05,257 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 902 transitions. Word has length 29 [2023-11-24 23:50:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:05,257 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 902 transitions. [2023-11-24 23:50:05,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 902 transitions. [2023-11-24 23:50:05,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 23:50:05,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:05,258 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:05,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:05,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-24 23:50:05,464 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:50:05,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:05,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1764064999, now seen corresponding path program 1 times [2023-11-24 23:50:05,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:05,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123191392] [2023-11-24 23:50:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:05,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:05,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:50:05,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590567871] [2023-11-24 23:50:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:05,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:05,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:05,473 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:05,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-24 23:50:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:05,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:50:05,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:05,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:05,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:05,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123191392] [2023-11-24 23:50:05,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:50:05,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590567871] [2023-11-24 23:50:05,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590567871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:05,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:05,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:05,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154254096] [2023-11-24 23:50:05,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:05,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:05,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:05,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:05,779 INFO L87 Difference]: Start difference. First operand 672 states and 902 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:06,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:06,761 INFO L93 Difference]: Finished difference Result 963 states and 1248 transitions. [2023-11-24 23:50:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:50:06,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-11-24 23:50:06,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:06,767 INFO L225 Difference]: With dead ends: 963 [2023-11-24 23:50:06,767 INFO L226 Difference]: Without dead ends: 849 [2023-11-24 23:50:06,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:50:06,769 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 145 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:06,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 160 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:50:06,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-11-24 23:50:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 776. [2023-11-24 23:50:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 725 states have (on average 1.3737931034482758) internal successors, (996), 749 states have internal predecessors, (996), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-24 23:50:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1042 transitions. [2023-11-24 23:50:06,815 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1042 transitions. Word has length 30 [2023-11-24 23:50:06,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:06,815 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1042 transitions. [2023-11-24 23:50:06,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1042 transitions. [2023-11-24 23:50:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 23:50:06,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:06,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:06,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:07,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-24 23:50:07,022 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:50:07,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash -140496703, now seen corresponding path program 1 times [2023-11-24 23:50:07,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:07,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190902151] [2023-11-24 23:50:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:07,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:07,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:50:07,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496741149] [2023-11-24 23:50:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:07,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:07,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:07,037 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:07,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-24 23:50:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:07,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:50:07,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:07,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:07,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:07,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190902151] [2023-11-24 23:50:07,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:50:07,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496741149] [2023-11-24 23:50:07,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496741149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:07,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:07,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:50:07,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843381163] [2023-11-24 23:50:07,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:07,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:50:07,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:07,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:50:07,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:50:07,154 INFO L87 Difference]: Start difference. First operand 776 states and 1042 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:07,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:07,332 INFO L93 Difference]: Finished difference Result 802 states and 1053 transitions. [2023-11-24 23:50:07,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:50:07,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-11-24 23:50:07,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:07,337 INFO L225 Difference]: With dead ends: 802 [2023-11-24 23:50:07,338 INFO L226 Difference]: Without dead ends: 801 [2023-11-24 23:50:07,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:50:07,339 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 103 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:07,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 84 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:50:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2023-11-24 23:50:07,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 776. [2023-11-24 23:50:07,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 725 states have (on average 1.3682758620689655) internal successors, (992), 749 states have internal predecessors, (992), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-24 23:50:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1038 transitions. [2023-11-24 23:50:07,384 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1038 transitions. Word has length 30 [2023-11-24 23:50:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:07,384 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1038 transitions. [2023-11-24 23:50:07,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:50:07,384 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1038 transitions. [2023-11-24 23:50:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-24 23:50:07,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:07,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:07,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:07,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-24 23:50:07,591 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-24 23:50:07,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:07,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1148559820, now seen corresponding path program 1 times [2023-11-24 23:50:07,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:07,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346058770] [2023-11-24 23:50:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:07,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:07,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:50:07,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792789559] [2023-11-24 23:50:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:07,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:07,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:07,600 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:07,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9149dab5-b2f8-493f-96ad-acedfd7a39cb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-24 23:50:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:07,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-24 23:50:07,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:07,980 INFO L327 TraceCheckSpWp]: Computing backward predicates...