./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound50.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_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3c408aeb75b378569a9828f29f37caa03495bee0afeec4c4af831c79f34806f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:41:38,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:41:39,011 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:41:39,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:41:39,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:41:39,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:41:39,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:41:39,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:41:39,043 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:41:39,043 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:41:39,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:41:39,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:41:39,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:41:39,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:41:39,046 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:41:39,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:41:39,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:41:39,048 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:41:39,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:41:39,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:41:39,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:41:39,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:41:39,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:41:39,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:41:39,053 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:41:39,054 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:41:39,054 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:41:39,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:41:39,054 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:41:39,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:41:39,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:41:39,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:41:39,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:41:39,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:41:39,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:41:39,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:41:39,058 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:41:39,058 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:41:39,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:41:39,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:41:39,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:41:39,059 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:41:39,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:41:39,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:41:39,060 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3c408aeb75b378569a9828f29f37caa03495bee0afeec4c4af831c79f34806f [2023-11-29 04:41:39,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:41:39,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:41:39,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:41:39,308 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:41:39,309 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:41:39,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound50.c [2023-11-29 04:41:42,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:41:42,182 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:41:42,183 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound50.c [2023-11-29 04:41:42,191 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/data/dae619508/ac0ce3bd70ff4eabb26b61683951355a/FLAG79dca03a6 [2023-11-29 04:41:42,203 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/data/dae619508/ac0ce3bd70ff4eabb26b61683951355a [2023-11-29 04:41:42,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:41:42,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:41:42,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:41:42,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:41:42,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:41:42,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1706f8f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42, skipping insertion in model container [2023-11-29 04:41:42,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,239 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:41:42,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:41:42,420 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:41:42,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:41:42,455 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:41:42,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42 WrapperNode [2023-11-29 04:41:42,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:41:42,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:41:42,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:41:42,458 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:41:42,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,499 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-11-29 04:41:42,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:41:42,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:41:42,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:41:42,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:41:42,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,516 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,530 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 04:41:42,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,535 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:41:42,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:41:42,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:41:42,545 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:41:42,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (1/1) ... [2023-11-29 04:41:42,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:41:42,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:42,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:41:42,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:41:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:41:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:41:42,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:41:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:41:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:41:42,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:41:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 04:41:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 04:41:42,686 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:41:42,688 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:41:42,961 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:41:42,981 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:41:42,981 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 04:41:42,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:41:42 BoogieIcfgContainer [2023-11-29 04:41:42,982 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:41:42,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:41:42,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:41:42,988 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:41:42,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:41:42" (1/3) ... [2023-11-29 04:41:42,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acfc8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:41:42, skipping insertion in model container [2023-11-29 04:41:42,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:41:42" (2/3) ... [2023-11-29 04:41:42,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acfc8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:41:42, skipping insertion in model container [2023-11-29 04:41:42,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:41:42" (3/3) ... [2023-11-29 04:41:42,991 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound50.c [2023-11-29 04:41:43,011 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:41:43,011 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-29 04:41:43,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:41:43,068 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=PETRI_NET, 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;@6428f804, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:41:43,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-29 04:41:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 63 states have internal predecessors, (72), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 04:41:43,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 04:41:43,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:43,082 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:43,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:43,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:43,088 INFO L85 PathProgramCache]: Analyzing trace with hash -86371443, now seen corresponding path program 1 times [2023-11-29 04:41:43,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:43,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109217018] [2023-11-29 04:41:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:43,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:43,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:43,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109217018] [2023-11-29 04:41:43,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:41:43,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987485709] [2023-11-29 04:41:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:43,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:43,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:43,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:43,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:41:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:43,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:41:43,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 04:41:43,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:41:43,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987485709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:41:43,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:41:43,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:41:43,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532895957] [2023-11-29 04:41:43,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:43,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:41:43,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:43,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:41:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:41:43,369 INFO L87 Difference]: Start difference. First operand has 76 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 63 states have internal predecessors, (72), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:41:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:43,402 INFO L93 Difference]: Finished difference Result 150 states and 191 transitions. [2023-11-29 04:41:43,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:41:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2023-11-29 04:41:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:43,412 INFO L225 Difference]: With dead ends: 150 [2023-11-29 04:41:43,413 INFO L226 Difference]: Without dead ends: 72 [2023-11-29 04:41:43,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:41:43,420 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:43,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:41:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-29 04:41:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-29 04:41:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 38 states have (on average 1.6842105263157894) internal successors, (64), 61 states have internal predecessors, (64), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 04:41:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2023-11-29 04:41:43,466 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 21 [2023-11-29 04:41:43,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:43,466 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2023-11-29 04:41:43,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:41:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2023-11-29 04:41:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 04:41:43,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:43,469 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:43,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:41:43,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 04:41:43,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:43,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:43,675 INFO L85 PathProgramCache]: Analyzing trace with hash 140634780, now seen corresponding path program 1 times [2023-11-29 04:41:43,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:43,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621453633] [2023-11-29 04:41:43,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:43,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:43,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:43,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987909654] [2023-11-29 04:41:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:43,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:43,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:43,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:43,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:41:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:43,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:41:43,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:41:43,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:41:43,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:43,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621453633] [2023-11-29 04:41:43,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:43,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987909654] [2023-11-29 04:41:43,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987909654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:41:43,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:41:43,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:41:43,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619538779] [2023-11-29 04:41:43,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:43,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:41:43,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:43,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:41:43,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:41:43,881 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 04:41:44,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:44,061 INFO L93 Difference]: Finished difference Result 148 states and 167 transitions. [2023-11-29 04:41:44,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:41:44,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 30 [2023-11-29 04:41:44,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:44,063 INFO L225 Difference]: With dead ends: 148 [2023-11-29 04:41:44,064 INFO L226 Difference]: Without dead ends: 99 [2023-11-29 04:41:44,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:41:44,066 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 78 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:44,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 199 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:41:44,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-29 04:41:44,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2023-11-29 04:41:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 77 states have internal predecessors, (87), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:41:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2023-11-29 04:41:44,091 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 30 [2023-11-29 04:41:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:44,093 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2023-11-29 04:41:44,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 04:41:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2023-11-29 04:41:44,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 04:41:44,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:44,095 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:44,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:41:44,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:44,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:44,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1677847877, now seen corresponding path program 1 times [2023-11-29 04:41:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:44,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254558927] [2023-11-29 04:41:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:44,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:44,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934311843] [2023-11-29 04:41:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:44,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:44,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:44,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:44,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:41:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:44,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:41:44,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:41:44,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:41:44,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:44,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254558927] [2023-11-29 04:41:44,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:44,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934311843] [2023-11-29 04:41:44,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934311843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:41:44,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:41:44,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:41:44,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457384533] [2023-11-29 04:41:44,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:44,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:41:44,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:44,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:41:44,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:41:44,418 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:44,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:44,454 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2023-11-29 04:41:44,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:41:44,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2023-11-29 04:41:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:44,456 INFO L225 Difference]: With dead ends: 93 [2023-11-29 04:41:44,456 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 04:41:44,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:41:44,458 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 47 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:44,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 74 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:41:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 04:41:44,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-29 04:41:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 54 states have (on average 1.5555555555555556) internal successors, (84), 75 states have internal predecessors, (84), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:41:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2023-11-29 04:41:44,473 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 38 [2023-11-29 04:41:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:44,474 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2023-11-29 04:41:44,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2023-11-29 04:41:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 04:41:44,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:44,476 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:44,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 04:41:44,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:44,682 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:44,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:44,682 INFO L85 PathProgramCache]: Analyzing trace with hash 473675319, now seen corresponding path program 1 times [2023-11-29 04:41:44,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:44,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090296320] [2023-11-29 04:41:44,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:44,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:44,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:44,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305911948] [2023-11-29 04:41:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:44,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:44,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:44,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:44,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:41:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:44,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:41:44,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:41:44,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:41:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:41:45,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:45,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090296320] [2023-11-29 04:41:45,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:45,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305911948] [2023-11-29 04:41:45,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305911948] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:41:45,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:41:45,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 04:41:45,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926386220] [2023-11-29 04:41:45,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:45,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:41:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:45,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:41:45,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:41:45,100 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:45,159 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2023-11-29 04:41:45,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:41:45,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-11-29 04:41:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:45,161 INFO L225 Difference]: With dead ends: 94 [2023-11-29 04:41:45,161 INFO L226 Difference]: Without dead ends: 93 [2023-11-29 04:41:45,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:41:45,162 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 95 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:45,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 69 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:41:45,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-29 04:41:45,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-29 04:41:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 77 states have internal predecessors, (85), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:41:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2023-11-29 04:41:45,177 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 39 [2023-11-29 04:41:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:45,177 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2023-11-29 04:41:45,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2023-11-29 04:41:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 04:41:45,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:45,179 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:45,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:41:45,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-29 04:41:45,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:45,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:45,385 INFO L85 PathProgramCache]: Analyzing trace with hash 473676697, now seen corresponding path program 1 times [2023-11-29 04:41:45,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:45,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653626603] [2023-11-29 04:41:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:45,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:45,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:45,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328435552] [2023-11-29 04:41:45,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:45,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:45,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:45,401 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:45,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:41:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:45,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:41:45,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:41:45,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:41:45,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:45,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653626603] [2023-11-29 04:41:45,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:45,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328435552] [2023-11-29 04:41:45,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328435552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:41:45,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:41:45,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:41:45,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575007269] [2023-11-29 04:41:45,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:45,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:41:45,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:45,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:41:45,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:41:45,474 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:45,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:45,520 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2023-11-29 04:41:45,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:41:45,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-11-29 04:41:45,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:45,522 INFO L225 Difference]: With dead ends: 105 [2023-11-29 04:41:45,523 INFO L226 Difference]: Without dead ends: 104 [2023-11-29 04:41:45,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:41:45,524 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 19 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:45,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 121 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:41:45,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-29 04:41:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2023-11-29 04:41:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.5) internal successors, (84), 77 states have internal predecessors, (84), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:41:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2023-11-29 04:41:45,552 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 39 [2023-11-29 04:41:45,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:45,553 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2023-11-29 04:41:45,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2023-11-29 04:41:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 04:41:45,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:45,554 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:45,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:41:45,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:45,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:45,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:45,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1799033082, now seen corresponding path program 1 times [2023-11-29 04:41:45,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:45,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410576033] [2023-11-29 04:41:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:45,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:45,772 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:45,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411756543] [2023-11-29 04:41:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:45,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:45,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:45,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:45,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:41:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:45,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:41:45,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:41:45,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:41:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:41:46,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410576033] [2023-11-29 04:41:46,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411756543] [2023-11-29 04:41:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411756543] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:41:46,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:41:46,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 04:41:46,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10853330] [2023-11-29 04:41:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:46,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:41:46,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:46,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:41:46,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:41:46,113 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:46,171 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2023-11-29 04:41:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:41:46,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2023-11-29 04:41:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:46,173 INFO L225 Difference]: With dead ends: 95 [2023-11-29 04:41:46,174 INFO L226 Difference]: Without dead ends: 94 [2023-11-29 04:41:46,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:41:46,175 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 47 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:46,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 88 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:41:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-29 04:41:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-11-29 04:41:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 78 states have internal predecessors, (84), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:41:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 110 transitions. [2023-11-29 04:41:46,189 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 110 transitions. Word has length 40 [2023-11-29 04:41:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:46,189 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 110 transitions. [2023-11-29 04:41:46,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:46,190 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 110 transitions. [2023-11-29 04:41:46,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 04:41:46,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:46,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:46,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:41:46,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 04:41:46,396 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:46,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:46,397 INFO L85 PathProgramCache]: Analyzing trace with hash -64549223, now seen corresponding path program 1 times [2023-11-29 04:41:46,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:46,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951378107] [2023-11-29 04:41:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:46,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:46,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:46,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557006328] [2023-11-29 04:41:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:46,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:46,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:46,411 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:46,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:41:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:46,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:41:46,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:41:46,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:41:46,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:46,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951378107] [2023-11-29 04:41:46,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:46,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557006328] [2023-11-29 04:41:46,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557006328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:41:46,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:41:46,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:41:46,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634613590] [2023-11-29 04:41:46,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:46,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:41:46,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:46,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:41:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:41:46,507 INFO L87 Difference]: Start difference. First operand 94 states and 110 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:46,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:46,584 INFO L93 Difference]: Finished difference Result 128 states and 147 transitions. [2023-11-29 04:41:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:41:46,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2023-11-29 04:41:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:46,586 INFO L225 Difference]: With dead ends: 128 [2023-11-29 04:41:46,586 INFO L226 Difference]: Without dead ends: 127 [2023-11-29 04:41:46,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:41:46,587 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 81 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:46,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 95 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:41:46,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-29 04:41:46,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2023-11-29 04:41:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 91 states have internal predecessors, (104), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:41:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2023-11-29 04:41:46,602 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 41 [2023-11-29 04:41:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:46,602 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2023-11-29 04:41:46,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2023-11-29 04:41:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 04:41:46,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:46,604 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:46,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:41:46,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:46,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:46,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:46,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2001025828, now seen corresponding path program 1 times [2023-11-29 04:41:46,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:46,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080861005] [2023-11-29 04:41:46,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:46,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:46,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:46,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656440464] [2023-11-29 04:41:46,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:46,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:46,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:46,819 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:46,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:41:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:46,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:41:46,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:41:47,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:41:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:41:47,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:47,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080861005] [2023-11-29 04:41:47,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:47,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656440464] [2023-11-29 04:41:47,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656440464] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:41:47,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:41:47,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-29 04:41:47,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588349341] [2023-11-29 04:41:47,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:47,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:41:47,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:47,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:41:47,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:41:47,199 INFO L87 Difference]: Start difference. First operand 109 states and 134 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:47,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:47,404 INFO L93 Difference]: Finished difference Result 120 states and 145 transitions. [2023-11-29 04:41:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:41:47,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2023-11-29 04:41:47,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:47,406 INFO L225 Difference]: With dead ends: 120 [2023-11-29 04:41:47,406 INFO L226 Difference]: Without dead ends: 119 [2023-11-29 04:41:47,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:41:47,407 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 86 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:47,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 108 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:41:47,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-29 04:41:47,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2023-11-29 04:41:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 72 states have (on average 1.4583333333333333) internal successors, (105), 93 states have internal predecessors, (105), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:41:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 135 transitions. [2023-11-29 04:41:47,423 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 135 transitions. Word has length 42 [2023-11-29 04:41:47,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:47,424 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 135 transitions. [2023-11-29 04:41:47,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:41:47,424 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 135 transitions. [2023-11-29 04:41:47,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 04:41:47,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:47,426 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:47,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:41:47,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:47,628 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:47,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:47,629 INFO L85 PathProgramCache]: Analyzing trace with hash -573724229, now seen corresponding path program 1 times [2023-11-29 04:41:47,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:47,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103396201] [2023-11-29 04:41:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:47,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:47,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:47,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502921842] [2023-11-29 04:41:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:47,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:47,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:47,643 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:47,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:41:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:47,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:41:47,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 04:41:47,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:41:48,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:48,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103396201] [2023-11-29 04:41:48,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:48,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502921842] [2023-11-29 04:41:48,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502921842] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:41:48,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:41:48,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 04:41:48,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16624297] [2023-11-29 04:41:48,148 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:41:48,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:41:48,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:48,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:41:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:41:48,150 INFO L87 Difference]: Start difference. First operand 111 states and 135 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 04:41:48,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:48,817 INFO L93 Difference]: Finished difference Result 141 states and 167 transitions. [2023-11-29 04:41:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:41:48,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 53 [2023-11-29 04:41:48,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:48,819 INFO L225 Difference]: With dead ends: 141 [2023-11-29 04:41:48,819 INFO L226 Difference]: Without dead ends: 129 [2023-11-29 04:41:48,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:41:48,820 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 179 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:48,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 217 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:41:48,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-29 04:41:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2023-11-29 04:41:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 80 states have (on average 1.35) internal successors, (108), 97 states have internal predecessors, (108), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-29 04:41:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 142 transitions. [2023-11-29 04:41:48,834 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 142 transitions. Word has length 53 [2023-11-29 04:41:48,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:48,834 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 142 transitions. [2023-11-29 04:41:48,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 04:41:48,835 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 142 transitions. [2023-11-29 04:41:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 04:41:48,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:48,836 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:48,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 04:41:49,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:49,041 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:49,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash -605581863, now seen corresponding path program 1 times [2023-11-29 04:41:49,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:49,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710332864] [2023-11-29 04:41:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:49,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:49,053 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:49,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570420831] [2023-11-29 04:41:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:49,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:49,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:49,055 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:49,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:41:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:49,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:41:49,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 04:41:49,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:41:49,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:49,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710332864] [2023-11-29 04:41:49,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:49,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570420831] [2023-11-29 04:41:49,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570420831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:41:49,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:41:49,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 04:41:49,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654579332] [2023-11-29 04:41:49,632 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:41:49,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:41:49,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:49,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:41:49,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:41:49,634 INFO L87 Difference]: Start difference. First operand 117 states and 142 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 04:41:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:50,470 INFO L93 Difference]: Finished difference Result 212 states and 255 transitions. [2023-11-29 04:41:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:41:50,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 54 [2023-11-29 04:41:50,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:50,472 INFO L225 Difference]: With dead ends: 212 [2023-11-29 04:41:50,472 INFO L226 Difference]: Without dead ends: 208 [2023-11-29 04:41:50,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:41:50,473 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 312 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:50,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 292 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:41:50,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-29 04:41:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 177. [2023-11-29 04:41:50,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 131 states have (on average 1.3435114503816794) internal successors, (176), 148 states have internal predecessors, (176), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 04:41:50,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 228 transitions. [2023-11-29 04:41:50,493 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 228 transitions. Word has length 54 [2023-11-29 04:41:50,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:50,493 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 228 transitions. [2023-11-29 04:41:50,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 04:41:50,494 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 228 transitions. [2023-11-29 04:41:50,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 04:41:50,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:50,495 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:50,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:41:50,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:50,697 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:50,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash -192611429, now seen corresponding path program 1 times [2023-11-29 04:41:50,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:50,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2894981] [2023-11-29 04:41:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:50,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:50,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397858224] [2023-11-29 04:41:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:50,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:50,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:50,709 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:50,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:41:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:50,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:41:50,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 04:41:50,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:41:50,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:50,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2894981] [2023-11-29 04:41:50,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:50,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397858224] [2023-11-29 04:41:50,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397858224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:41:50,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:41:50,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:41:50,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055044421] [2023-11-29 04:41:50,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:50,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:41:50,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:50,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:41:50,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:41:50,777 INFO L87 Difference]: Start difference. First operand 177 states and 228 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 04:41:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:50,827 INFO L93 Difference]: Finished difference Result 200 states and 251 transitions. [2023-11-29 04:41:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:41:50,828 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), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-11-29 04:41:50,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:50,830 INFO L225 Difference]: With dead ends: 200 [2023-11-29 04:41:50,830 INFO L226 Difference]: Without dead ends: 198 [2023-11-29 04:41:50,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:41:50,831 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 30 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:50,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 98 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:41:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-29 04:41:50,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 179. [2023-11-29 04:41:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 133 states have (on average 1.3383458646616542) internal successors, (178), 150 states have internal predecessors, (178), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 04:41:50,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2023-11-29 04:41:50,849 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 56 [2023-11-29 04:41:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:50,849 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2023-11-29 04:41:50,850 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), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 04:41:50,850 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2023-11-29 04:41:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 04:41:50,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:50,851 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:50,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:41:51,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:51,051 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:51,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:51,052 INFO L85 PathProgramCache]: Analyzing trace with hash -415985539, now seen corresponding path program 1 times [2023-11-29 04:41:51,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:51,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991792922] [2023-11-29 04:41:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:51,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:51,062 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:51,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587655177] [2023-11-29 04:41:51,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:51,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:51,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:51,064 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:51,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:41:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:51,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:41:51,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 04:41:51,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:41:51,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:51,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991792922] [2023-11-29 04:41:51,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:51,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587655177] [2023-11-29 04:41:51,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587655177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:41:51,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:41:51,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:41:51,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072966531] [2023-11-29 04:41:51,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:51,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:41:51,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:51,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:41:51,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:41:51,152 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 04:41:51,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:51,499 INFO L93 Difference]: Finished difference Result 193 states and 242 transitions. [2023-11-29 04:41:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:41:51,500 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), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2023-11-29 04:41:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:51,501 INFO L225 Difference]: With dead ends: 193 [2023-11-29 04:41:51,502 INFO L226 Difference]: Without dead ends: 192 [2023-11-29 04:41:51,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:41:51,503 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 38 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:51,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 134 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:41:51,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-29 04:41:51,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2023-11-29 04:41:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 134 states have (on average 1.335820895522388) internal successors, (179), 151 states have internal predecessors, (179), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 04:41:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 231 transitions. [2023-11-29 04:41:51,528 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 231 transitions. Word has length 58 [2023-11-29 04:41:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:51,528 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 231 transitions. [2023-11-29 04:41:51,528 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), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 04:41:51,528 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 231 transitions. [2023-11-29 04:41:51,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 04:41:51,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:51,529 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:51,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 04:41:51,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:41:51,729 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:51,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:51,730 INFO L85 PathProgramCache]: Analyzing trace with hash -10649692, now seen corresponding path program 1 times [2023-11-29 04:41:51,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:51,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528507557] [2023-11-29 04:41:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:51,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:51,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:51,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907216282] [2023-11-29 04:41:51,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:51,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:51,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:51,741 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:51,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 04:41:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:51,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:41:51,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 04:41:51,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:41:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 04:41:51,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528507557] [2023-11-29 04:41:51,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907216282] [2023-11-29 04:41:51,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907216282] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:41:51,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:41:51,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 04:41:51,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399852122] [2023-11-29 04:41:51,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:51,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:41:51,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:41:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:41:51,993 INFO L87 Difference]: Start difference. First operand 180 states and 231 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 04:41:52,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:52,279 INFO L93 Difference]: Finished difference Result 185 states and 235 transitions. [2023-11-29 04:41:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:41:52,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 59 [2023-11-29 04:41:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:52,281 INFO L225 Difference]: With dead ends: 185 [2023-11-29 04:41:52,281 INFO L226 Difference]: Without dead ends: 170 [2023-11-29 04:41:52,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:41:52,282 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 19 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:52,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 140 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:41:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-29 04:41:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-29 04:41:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 126 states have (on average 1.3492063492063493) internal successors, (170), 143 states have internal predecessors, (170), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 04:41:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2023-11-29 04:41:52,301 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 59 [2023-11-29 04:41:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:52,301 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2023-11-29 04:41:52,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 04:41:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2023-11-29 04:41:52,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 04:41:52,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:52,302 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:52,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 04:41:52,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:52,502 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:52,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:52,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1887727782, now seen corresponding path program 1 times [2023-11-29 04:41:52,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:52,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876692244] [2023-11-29 04:41:52,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:52,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:52,511 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:52,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376155324] [2023-11-29 04:41:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:52,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:52,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:52,512 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:52,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 04:41:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:52,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:41:52,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-29 04:41:52,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:41:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-29 04:41:52,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:52,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876692244] [2023-11-29 04:41:52,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:52,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376155324] [2023-11-29 04:41:52,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376155324] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:41:52,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:41:52,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 04:41:52,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280845882] [2023-11-29 04:41:52,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:41:52,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:41:52,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:52,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:41:52,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:41:52,654 INFO L87 Difference]: Start difference. First operand 170 states and 218 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 04:41:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:52,881 INFO L93 Difference]: Finished difference Result 299 states and 365 transitions. [2023-11-29 04:41:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:41:52,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 62 [2023-11-29 04:41:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:52,884 INFO L225 Difference]: With dead ends: 299 [2023-11-29 04:41:52,884 INFO L226 Difference]: Without dead ends: 297 [2023-11-29 04:41:52,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:41:52,885 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 119 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:52,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 228 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:41:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-29 04:41:52,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 239. [2023-11-29 04:41:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 183 states have (on average 1.349726775956284) internal successors, (247), 200 states have internal predecessors, (247), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 04:41:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 319 transitions. [2023-11-29 04:41:52,922 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 319 transitions. Word has length 62 [2023-11-29 04:41:52,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:52,923 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 319 transitions. [2023-11-29 04:41:52,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 04:41:52,923 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 319 transitions. [2023-11-29 04:41:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 04:41:52,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:52,924 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:52,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 04:41:53,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:53,125 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:53,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:53,125 INFO L85 PathProgramCache]: Analyzing trace with hash -341860360, now seen corresponding path program 2 times [2023-11-29 04:41:53,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:53,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461833627] [2023-11-29 04:41:53,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:53,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:53,134 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:53,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018870295] [2023-11-29 04:41:53,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:41:53,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:53,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:53,136 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:53,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 04:41:53,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:41:53,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:41:53,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:41:53,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-29 04:41:53,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:41:53,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:53,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461833627] [2023-11-29 04:41:53,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:53,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018870295] [2023-11-29 04:41:53,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018870295] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:41:53,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:41:53,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 04:41:53,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620844812] [2023-11-29 04:41:53,922 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:41:53,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:41:53,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:53,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:41:53,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:41:53,923 INFO L87 Difference]: Start difference. First operand 239 states and 319 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-29 04:41:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:55,669 INFO L93 Difference]: Finished difference Result 319 states and 411 transitions. [2023-11-29 04:41:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:41:55,669 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 77 [2023-11-29 04:41:55,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:55,672 INFO L225 Difference]: With dead ends: 319 [2023-11-29 04:41:55,672 INFO L226 Difference]: Without dead ends: 315 [2023-11-29 04:41:55,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:41:55,673 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 157 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:55,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 535 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 04:41:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-29 04:41:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 239. [2023-11-29 04:41:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 183 states have (on average 1.3387978142076502) internal successors, (245), 200 states have internal predecessors, (245), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 04:41:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 317 transitions. [2023-11-29 04:41:55,694 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 317 transitions. Word has length 77 [2023-11-29 04:41:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:55,694 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 317 transitions. [2023-11-29 04:41:55,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-29 04:41:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 317 transitions. [2023-11-29 04:41:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 04:41:55,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:55,695 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:55,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 04:41:55,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:41:55,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:55,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:55,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1771595447, now seen corresponding path program 1 times [2023-11-29 04:41:55,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:55,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938219602] [2023-11-29 04:41:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:55,906 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:55,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118578709] [2023-11-29 04:41:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:55,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:55,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:55,908 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:55,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 04:41:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:55,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:41:55,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-29 04:41:55,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:41:55,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:55,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938219602] [2023-11-29 04:41:55,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:55,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118578709] [2023-11-29 04:41:55,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118578709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:41:55,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:41:55,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:41:55,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795017258] [2023-11-29 04:41:55,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:55,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:41:55,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:55,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:41:55,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:41:55,966 INFO L87 Difference]: Start difference. First operand 239 states and 317 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 04:41:56,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:56,018 INFO L93 Difference]: Finished difference Result 239 states and 317 transitions. [2023-11-29 04:41:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:41:56,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 84 [2023-11-29 04:41:56,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:56,021 INFO L225 Difference]: With dead ends: 239 [2023-11-29 04:41:56,021 INFO L226 Difference]: Without dead ends: 238 [2023-11-29 04:41:56,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:41:56,022 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 4 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:56,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 113 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:41:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-29 04:41:56,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-11-29 04:41:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 183 states have (on average 1.3224043715846994) internal successors, (242), 199 states have internal predecessors, (242), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 04:41:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 314 transitions. [2023-11-29 04:41:56,069 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 314 transitions. Word has length 84 [2023-11-29 04:41:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:56,070 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 314 transitions. [2023-11-29 04:41:56,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 04:41:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 314 transitions. [2023-11-29 04:41:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 04:41:56,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:56,071 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:56,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 04:41:56,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:41:56,271 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:56,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:56,272 INFO L85 PathProgramCache]: Analyzing trace with hash 915116102, now seen corresponding path program 1 times [2023-11-29 04:41:56,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:56,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303192303] [2023-11-29 04:41:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:56,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:56,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:56,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160630182] [2023-11-29 04:41:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:56,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:56,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:56,282 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:56,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 04:41:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:56,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:41:56,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 04:41:56,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:41:56,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:56,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303192303] [2023-11-29 04:41:56,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:56,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160630182] [2023-11-29 04:41:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160630182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:41:56,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:41:56,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:41:56,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545113924] [2023-11-29 04:41:56,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:56,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:41:56,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:41:56,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:41:56,561 INFO L87 Difference]: Start difference. First operand 238 states and 314 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-29 04:41:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:56,936 INFO L93 Difference]: Finished difference Result 445 states and 587 transitions. [2023-11-29 04:41:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:41:56,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 85 [2023-11-29 04:41:56,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:56,939 INFO L225 Difference]: With dead ends: 445 [2023-11-29 04:41:56,939 INFO L226 Difference]: Without dead ends: 302 [2023-11-29 04:41:56,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:41:56,940 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 51 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:56,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 256 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:41:56,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-29 04:41:56,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 208. [2023-11-29 04:41:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 160 states have (on average 1.30625) internal successors, (209), 175 states have internal predecessors, (209), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 04:41:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 269 transitions. [2023-11-29 04:41:56,971 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 269 transitions. Word has length 85 [2023-11-29 04:41:56,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:56,972 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 269 transitions. [2023-11-29 04:41:56,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-29 04:41:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 269 transitions. [2023-11-29 04:41:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 04:41:56,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:56,973 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:56,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 04:41:57,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:41:57,177 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:57,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:57,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1696171797, now seen corresponding path program 1 times [2023-11-29 04:41:57,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:57,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227420606] [2023-11-29 04:41:57,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:57,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:57,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:57,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126410424] [2023-11-29 04:41:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:57,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:57,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:57,186 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:57,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 04:41:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:57,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:41:57,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-29 04:41:57,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:41:57,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:57,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227420606] [2023-11-29 04:41:57,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:57,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126410424] [2023-11-29 04:41:57,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126410424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:41:57,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:41:57,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:41:57,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713693499] [2023-11-29 04:41:57,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:57,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:41:57,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:41:57,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:41:57,369 INFO L87 Difference]: Start difference. First operand 208 states and 269 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 04:41:57,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:57,524 INFO L93 Difference]: Finished difference Result 218 states and 281 transitions. [2023-11-29 04:41:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:41:57,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2023-11-29 04:41:57,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:57,526 INFO L225 Difference]: With dead ends: 218 [2023-11-29 04:41:57,526 INFO L226 Difference]: Without dead ends: 217 [2023-11-29 04:41:57,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:41:57,526 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 47 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:57,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 96 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:41:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-29 04:41:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2023-11-29 04:41:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 163 states have (on average 1.3006134969325154) internal successors, (212), 178 states have internal predecessors, (212), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 04:41:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 272 transitions. [2023-11-29 04:41:57,548 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 272 transitions. Word has length 86 [2023-11-29 04:41:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:57,549 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 272 transitions. [2023-11-29 04:41:57,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 04:41:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 272 transitions. [2023-11-29 04:41:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 04:41:57,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:57,550 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:57,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 04:41:57,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:41:57,751 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:57,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1041718040, now seen corresponding path program 1 times [2023-11-29 04:41:57,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:57,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70042459] [2023-11-29 04:41:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:57,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:57,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:57,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087921371] [2023-11-29 04:41:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:57,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:57,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:57,761 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:57,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 04:41:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:57,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:41:57,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-29 04:41:57,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:41:57,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:57,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70042459] [2023-11-29 04:41:57,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:57,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087921371] [2023-11-29 04:41:57,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087921371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:41:57,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:41:57,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:41:57,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897440244] [2023-11-29 04:41:57,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:41:57,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:41:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:57,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:41:57,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:41:57,907 INFO L87 Difference]: Start difference. First operand 211 states and 272 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 04:41:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:41:58,102 INFO L93 Difference]: Finished difference Result 217 states and 278 transitions. [2023-11-29 04:41:58,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:41:58,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2023-11-29 04:41:58,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:41:58,104 INFO L225 Difference]: With dead ends: 217 [2023-11-29 04:41:58,104 INFO L226 Difference]: Without dead ends: 215 [2023-11-29 04:41:58,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:41:58,105 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 25 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:41:58,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 90 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:41:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-29 04:41:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2023-11-29 04:41:58,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 166 states have (on average 1.283132530120482) internal successors, (213), 181 states have internal predecessors, (213), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 04:41:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 273 transitions. [2023-11-29 04:41:58,138 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 273 transitions. Word has length 87 [2023-11-29 04:41:58,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:41:58,138 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 273 transitions. [2023-11-29 04:41:58,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 04:41:58,139 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 273 transitions. [2023-11-29 04:41:58,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 04:41:58,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:41:58,140 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:41:58,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 04:41:58,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:58,340 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:41:58,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:41:58,341 INFO L85 PathProgramCache]: Analyzing trace with hash -363654006, now seen corresponding path program 1 times [2023-11-29 04:41:58,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:41:58,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430008788] [2023-11-29 04:41:58,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:58,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:41:58,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:41:58,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787430744] [2023-11-29 04:41:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:41:58,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:41:58,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:41:58,350 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:41:58,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 04:41:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:41:58,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:41:58,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-29 04:41:58,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:41:59,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:41:59,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430008788] [2023-11-29 04:41:59,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:41:59,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787430744] [2023-11-29 04:41:59,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787430744] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:41:59,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:41:59,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-29 04:41:59,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108407683] [2023-11-29 04:41:59,818 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:41:59,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:41:59,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:41:59,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:41:59,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:41:59,819 INFO L87 Difference]: Start difference. First operand 214 states and 273 transitions. Second operand has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-29 04:42:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:00,319 INFO L93 Difference]: Finished difference Result 283 states and 349 transitions. [2023-11-29 04:42:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:42:00,320 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 89 [2023-11-29 04:42:00,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:00,322 INFO L225 Difference]: With dead ends: 283 [2023-11-29 04:42:00,322 INFO L226 Difference]: Without dead ends: 282 [2023-11-29 04:42:00,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:42:00,323 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 250 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:00,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 205 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:42:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-29 04:42:00,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 235. [2023-11-29 04:42:00,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 185 states have (on average 1.2540540540540541) internal successors, (232), 200 states have internal predecessors, (232), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 04:42:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 296 transitions. [2023-11-29 04:42:00,354 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 296 transitions. Word has length 89 [2023-11-29 04:42:00,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:00,354 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 296 transitions. [2023-11-29 04:42:00,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-29 04:42:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 296 transitions. [2023-11-29 04:42:00,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 04:42:00,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:00,356 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:00,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 04:42:00,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:00,557 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:42:00,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:00,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1611627783, now seen corresponding path program 1 times [2023-11-29 04:42:00,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:00,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227964945] [2023-11-29 04:42:00,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:00,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:00,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:42:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484779727] [2023-11-29 04:42:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:00,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:00,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:00,569 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:00,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 04:42:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:00,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:42:00,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-29 04:42:01,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:42:01,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:42:01,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227964945] [2023-11-29 04:42:01,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:42:01,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484779727] [2023-11-29 04:42:01,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484779727] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:42:01,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:42:01,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-29 04:42:01,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259989858] [2023-11-29 04:42:01,973 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:42:01,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:42:01,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:42:01,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:42:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:42:01,974 INFO L87 Difference]: Start difference. First operand 235 states and 296 transitions. Second operand has 13 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-29 04:42:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:02,482 INFO L93 Difference]: Finished difference Result 272 states and 336 transitions. [2023-11-29 04:42:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:42:02,483 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 90 [2023-11-29 04:42:02,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:02,485 INFO L225 Difference]: With dead ends: 272 [2023-11-29 04:42:02,485 INFO L226 Difference]: Without dead ends: 271 [2023-11-29 04:42:02,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:42:02,486 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 218 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:02,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 178 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:42:02,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-29 04:42:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 236. [2023-11-29 04:42:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 186 states have (on average 1.2526881720430108) internal successors, (233), 201 states have internal predecessors, (233), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 04:42:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 297 transitions. [2023-11-29 04:42:02,522 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 297 transitions. Word has length 90 [2023-11-29 04:42:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:02,523 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 297 transitions. [2023-11-29 04:42:02,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-29 04:42:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 297 transitions. [2023-11-29 04:42:02,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:42:02,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:02,524 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:02,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 04:42:02,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:02,725 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:42:02,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:02,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1579146196, now seen corresponding path program 1 times [2023-11-29 04:42:02,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:02,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47718399] [2023-11-29 04:42:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:02,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:02,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:42:02,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252012228] [2023-11-29 04:42:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:02,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:02,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:02,736 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:02,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 04:42:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:02,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:42:02,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-29 04:42:02,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:42:02,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:42:02,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47718399] [2023-11-29 04:42:02,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:42:02,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252012228] [2023-11-29 04:42:02,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252012228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:42:02,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:42:02,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:42:02,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597939658] [2023-11-29 04:42:02,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:42:02,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:42:02,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:42:02,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:42:02,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:42:02,830 INFO L87 Difference]: Start difference. First operand 236 states and 297 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 04:42:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:03,042 INFO L93 Difference]: Finished difference Result 236 states and 297 transitions. [2023-11-29 04:42:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:42:03,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 91 [2023-11-29 04:42:03,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:03,044 INFO L225 Difference]: With dead ends: 236 [2023-11-29 04:42:03,044 INFO L226 Difference]: Without dead ends: 235 [2023-11-29 04:42:03,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:42:03,045 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 83 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:03,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 86 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:42:03,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-29 04:42:03,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2023-11-29 04:42:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 186 states have (on average 1.2204301075268817) internal successors, (227), 200 states have internal predecessors, (227), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 04:42:03,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 291 transitions. [2023-11-29 04:42:03,071 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 291 transitions. Word has length 91 [2023-11-29 04:42:03,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:03,071 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 291 transitions. [2023-11-29 04:42:03,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 04:42:03,072 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 291 transitions. [2023-11-29 04:42:03,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 04:42:03,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:03,072 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:03,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 04:42:03,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 04:42:03,273 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:42:03,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:03,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1708891735, now seen corresponding path program 1 times [2023-11-29 04:42:03,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:03,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239857158] [2023-11-29 04:42:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:03,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:03,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:42:03,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251430600] [2023-11-29 04:42:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:03,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:03,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:03,283 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:03,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 04:42:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:42:03,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:42:03,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 04:42:04,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:42:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 04:42:12,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:42:12,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239857158] [2023-11-29 04:42:12,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:42:12,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251430600] [2023-11-29 04:42:12,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251430600] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:42:12,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:42:12,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-29 04:42:12,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236109652] [2023-11-29 04:42:12,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:42:12,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 04:42:12,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:42:12,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 04:42:12,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2023-11-29 04:42:12,981 INFO L87 Difference]: Start difference. First operand 235 states and 291 transitions. Second operand has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-29 04:42:27,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:42:30,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:42:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:42:33,093 INFO L93 Difference]: Finished difference Result 306 states and 375 transitions. [2023-11-29 04:42:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 04:42:33,093 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 92 [2023-11-29 04:42:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:42:33,095 INFO L225 Difference]: With dead ends: 306 [2023-11-29 04:42:33,095 INFO L226 Difference]: Without dead ends: 305 [2023-11-29 04:42:33,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=355, Invalid=767, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 04:42:33,097 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 276 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:42:33,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 241 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2023-11-29 04:42:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-29 04:42:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 254. [2023-11-29 04:42:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 203 states have (on average 1.2364532019704433) internal successors, (251), 217 states have internal predecessors, (251), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-29 04:42:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 319 transitions. [2023-11-29 04:42:33,129 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 319 transitions. Word has length 92 [2023-11-29 04:42:33,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:42:33,130 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 319 transitions. [2023-11-29 04:42:33,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-29 04:42:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 319 transitions. [2023-11-29 04:42:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 04:42:33,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:42:33,131 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:42:33,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 04:42:33,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 04:42:33,331 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:42:33,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:42:33,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1294179065, now seen corresponding path program 3 times [2023-11-29 04:42:33,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:42:33,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629316945] [2023-11-29 04:42:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:42:33,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:42:33,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:42:33,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990841985] [2023-11-29 04:42:33,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:42:33,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:42:33,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:42:33,339 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:42:33,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 04:42:33,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 04:42:33,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:42:33,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:42:33,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:42:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 38 proven. 29 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-11-29 04:42:35,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:42:36,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:42:36,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629316945] [2023-11-29 04:42:36,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:42:36,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990841985] [2023-11-29 04:42:36,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990841985] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:42:36,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:42:36,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 04:42:36,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905291067] [2023-11-29 04:42:36,048 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:42:36,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:42:36,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:42:36,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:42:36,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:42:36,049 INFO L87 Difference]: Start difference. First operand 254 states and 319 transitions. Second operand has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-29 04:42:39,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:42:45,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:42:49,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:42:53,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:42:57,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:43:01,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:43:05,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:43:09,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:43:14,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:43:18,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:43:22,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:43:26,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:43:31,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:43:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:43:31,541 INFO L93 Difference]: Finished difference Result 297 states and 367 transitions. [2023-11-29 04:43:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:43:31,542 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) Word has length 100 [2023-11-29 04:43:31,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:43:31,544 INFO L225 Difference]: With dead ends: 297 [2023-11-29 04:43:31,544 INFO L226 Difference]: Without dead ends: 293 [2023-11-29 04:43:31,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2023-11-29 04:43:31,545 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 200 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 28 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:43:31,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 409 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 630 Invalid, 13 Unknown, 0 Unchecked, 53.9s Time] [2023-11-29 04:43:31,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-29 04:43:31,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 226. [2023-11-29 04:43:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 181 states have (on average 1.171270718232044) internal successors, (212), 191 states have internal predecessors, (212), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 04:43:31,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 276 transitions. [2023-11-29 04:43:31,575 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 276 transitions. Word has length 100 [2023-11-29 04:43:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:43:31,576 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 276 transitions. [2023-11-29 04:43:31,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-29 04:43:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 276 transitions. [2023-11-29 04:43:31,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 04:43:31,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:43:31,577 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:43:31,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 04:43:31,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 04:43:31,778 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:43:31,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:43:31,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2086556248, now seen corresponding path program 1 times [2023-11-29 04:43:31,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:43:31,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780032295] [2023-11-29 04:43:31,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:31,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:43:31,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:43:31,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330592860] [2023-11-29 04:43:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:31,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:43:31,787 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:43:31,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 04:43:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:43:31,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:43:31,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:43:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-29 04:43:32,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:43:33,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:43:33,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780032295] [2023-11-29 04:43:33,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:43:33,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330592860] [2023-11-29 04:43:33,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330592860] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:43:33,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:43:33,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 04:43:33,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829706907] [2023-11-29 04:43:33,250 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:43:33,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:43:33,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:43:33,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:43:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:43:33,251 INFO L87 Difference]: Start difference. First operand 226 states and 276 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-29 04:43:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:43:33,702 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2023-11-29 04:43:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:43:33,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 106 [2023-11-29 04:43:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:43:33,704 INFO L225 Difference]: With dead ends: 279 [2023-11-29 04:43:33,704 INFO L226 Difference]: Without dead ends: 278 [2023-11-29 04:43:33,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:43:33,704 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 36 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:43:33,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 293 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:43:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-29 04:43:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 262. [2023-11-29 04:43:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 211 states have (on average 1.1990521327014219) internal successors, (253), 221 states have internal predecessors, (253), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 04:43:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 329 transitions. [2023-11-29 04:43:33,743 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 329 transitions. Word has length 106 [2023-11-29 04:43:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:43:33,743 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 329 transitions. [2023-11-29 04:43:33,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-29 04:43:33,743 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 329 transitions. [2023-11-29 04:43:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 04:43:33,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:43:33,744 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:43:33,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 04:43:33,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 04:43:33,945 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:43:33,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:43:33,945 INFO L85 PathProgramCache]: Analyzing trace with hash -258734123, now seen corresponding path program 1 times [2023-11-29 04:43:33,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:43:33,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434203788] [2023-11-29 04:43:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:33,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:43:33,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:43:33,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640638369] [2023-11-29 04:43:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:33,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:33,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:43:33,954 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:43:33,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 04:43:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:43:34,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:43:34,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:43:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-29 04:43:34,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:43:35,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:43:35,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434203788] [2023-11-29 04:43:35,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:43:35,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640638369] [2023-11-29 04:43:35,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640638369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:43:35,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:43:35,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 04:43:35,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961971685] [2023-11-29 04:43:35,583 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:43:35,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:43:35,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:43:35,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:43:35,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:43:35,584 INFO L87 Difference]: Start difference. First operand 262 states and 329 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-29 04:43:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:43:35,913 INFO L93 Difference]: Finished difference Result 284 states and 347 transitions. [2023-11-29 04:43:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:43:35,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 107 [2023-11-29 04:43:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:43:35,916 INFO L225 Difference]: With dead ends: 284 [2023-11-29 04:43:35,916 INFO L226 Difference]: Without dead ends: 282 [2023-11-29 04:43:35,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:43:35,917 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 39 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:43:35,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 279 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:43:35,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-29 04:43:35,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 265. [2023-11-29 04:43:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 214 states have (on average 1.1962616822429906) internal successors, (256), 224 states have internal predecessors, (256), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 04:43:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 332 transitions. [2023-11-29 04:43:35,980 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 332 transitions. Word has length 107 [2023-11-29 04:43:35,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:43:35,981 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 332 transitions. [2023-11-29 04:43:35,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-29 04:43:35,981 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 332 transitions. [2023-11-29 04:43:35,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 04:43:35,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:43:35,982 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:43:35,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 04:43:36,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 04:43:36,183 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:43:36,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:43:36,183 INFO L85 PathProgramCache]: Analyzing trace with hash 569176906, now seen corresponding path program 1 times [2023-11-29 04:43:36,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:43:36,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989771605] [2023-11-29 04:43:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:36,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:43:36,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:43:36,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433954796] [2023-11-29 04:43:36,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:36,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:36,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:43:36,194 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:43:36,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 04:43:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:43:36,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:43:36,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:43:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-29 04:43:36,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:43:36,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:43:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989771605] [2023-11-29 04:43:36,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:43:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433954796] [2023-11-29 04:43:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433954796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:43:36,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:43:36,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:43:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863100399] [2023-11-29 04:43:36,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:43:36,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:43:36,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:43:36,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:43:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:43:36,288 INFO L87 Difference]: Start difference. First operand 265 states and 332 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 04:43:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:43:36,781 INFO L93 Difference]: Finished difference Result 265 states and 332 transitions. [2023-11-29 04:43:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:43:36,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2023-11-29 04:43:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:43:36,783 INFO L225 Difference]: With dead ends: 265 [2023-11-29 04:43:36,783 INFO L226 Difference]: Without dead ends: 264 [2023-11-29 04:43:36,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:43:36,784 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 45 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:43:36,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 117 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:43:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-29 04:43:36,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-11-29 04:43:36,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 214 states have (on average 1.191588785046729) internal successors, (255), 223 states have internal predecessors, (255), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 04:43:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 331 transitions. [2023-11-29 04:43:36,829 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 331 transitions. Word has length 108 [2023-11-29 04:43:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:43:36,830 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 331 transitions. [2023-11-29 04:43:36,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 04:43:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 331 transitions. [2023-11-29 04:43:36,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 04:43:36,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:43:36,831 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:43:36,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 04:43:37,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 04:43:37,032 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:43:37,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:43:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash 464615031, now seen corresponding path program 1 times [2023-11-29 04:43:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:43:37,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9711445] [2023-11-29 04:43:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:37,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:43:37,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:43:37,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053119785] [2023-11-29 04:43:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:37,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:37,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:43:37,041 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:43:37,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 04:43:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:43:37,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:43:37,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:43:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-29 04:43:37,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:43:37,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:43:37,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9711445] [2023-11-29 04:43:37,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:43:37,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053119785] [2023-11-29 04:43:37,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053119785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:43:37,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:43:37,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-29 04:43:37,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607047534] [2023-11-29 04:43:37,437 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:43:37,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:43:37,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:43:37,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:43:37,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:43:37,438 INFO L87 Difference]: Start difference. First operand 264 states and 331 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 04:43:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:43:37,635 INFO L93 Difference]: Finished difference Result 274 states and 337 transitions. [2023-11-29 04:43:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:43:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 109 [2023-11-29 04:43:37,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:43:37,637 INFO L225 Difference]: With dead ends: 274 [2023-11-29 04:43:37,637 INFO L226 Difference]: Without dead ends: 269 [2023-11-29 04:43:37,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:43:37,638 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 9 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:43:37,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 166 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:43:37,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-29 04:43:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 262. [2023-11-29 04:43:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 212 states have (on average 1.179245283018868) internal successors, (250), 221 states have internal predecessors, (250), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 04:43:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 326 transitions. [2023-11-29 04:43:37,685 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 326 transitions. Word has length 109 [2023-11-29 04:43:37,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:43:37,685 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 326 transitions. [2023-11-29 04:43:37,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 04:43:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 326 transitions. [2023-11-29 04:43:37,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 04:43:37,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:43:37,686 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:43:37,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 04:43:37,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 04:43:37,887 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:43:37,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:43:37,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2059823605, now seen corresponding path program 2 times [2023-11-29 04:43:37,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:43:37,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955834259] [2023-11-29 04:43:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:37,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:43:37,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:43:37,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498891480] [2023-11-29 04:43:37,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:43:37,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:37,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:43:37,895 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:43:37,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 04:43:37,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:43:37,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:43:37,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:43:37,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:43:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-29 04:43:38,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:43:39,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:43:39,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955834259] [2023-11-29 04:43:39,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:43:39,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498891480] [2023-11-29 04:43:39,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498891480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:43:39,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:43:39,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-29 04:43:39,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694862601] [2023-11-29 04:43:39,292 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:43:39,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:43:39,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:43:39,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:43:39,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:43:39,293 INFO L87 Difference]: Start difference. First operand 262 states and 326 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-29 04:43:39,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:43:39,511 INFO L93 Difference]: Finished difference Result 298 states and 366 transitions. [2023-11-29 04:43:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:43:39,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 112 [2023-11-29 04:43:39,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:43:39,513 INFO L225 Difference]: With dead ends: 298 [2023-11-29 04:43:39,513 INFO L226 Difference]: Without dead ends: 296 [2023-11-29 04:43:39,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:43:39,514 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 76 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:43:39,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 224 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:43:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-11-29 04:43:39,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 260. [2023-11-29 04:43:39,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 212 states have (on average 1.1367924528301887) internal successors, (241), 219 states have internal predecessors, (241), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 04:43:39,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 317 transitions. [2023-11-29 04:43:39,553 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 317 transitions. Word has length 112 [2023-11-29 04:43:39,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:43:39,553 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 317 transitions. [2023-11-29 04:43:39,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-29 04:43:39,553 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 317 transitions. [2023-11-29 04:43:39,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 04:43:39,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:43:39,554 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:43:39,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 04:43:39,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 04:43:39,755 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:43:39,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:43:39,755 INFO L85 PathProgramCache]: Analyzing trace with hash 700203380, now seen corresponding path program 1 times [2023-11-29 04:43:39,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:43:39,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361791901] [2023-11-29 04:43:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:43:39,763 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:43:39,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525638911] [2023-11-29 04:43:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:39,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:39,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:43:39,764 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:43:39,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 04:43:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:43:39,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:43:39,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:43:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-29 04:43:39,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:43:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-29 04:43:39,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:43:39,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361791901] [2023-11-29 04:43:39,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:43:39,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525638911] [2023-11-29 04:43:39,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525638911] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:43:39,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:43:39,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2023-11-29 04:43:39,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238711678] [2023-11-29 04:43:39,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:43:39,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:43:39,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:43:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:43:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:43:39,961 INFO L87 Difference]: Start difference. First operand 260 states and 317 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-29 04:43:40,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:43:40,059 INFO L93 Difference]: Finished difference Result 299 states and 358 transitions. [2023-11-29 04:43:40,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:43:40,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 112 [2023-11-29 04:43:40,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:43:40,061 INFO L225 Difference]: With dead ends: 299 [2023-11-29 04:43:40,061 INFO L226 Difference]: Without dead ends: 209 [2023-11-29 04:43:40,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:43:40,062 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 14 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:43:40,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 163 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:43:40,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-29 04:43:40,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-29 04:43:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 167 states have (on average 1.1377245508982037) internal successors, (190), 174 states have internal predecessors, (190), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 04:43:40,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 254 transitions. [2023-11-29 04:43:40,095 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 254 transitions. Word has length 112 [2023-11-29 04:43:40,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:43:40,096 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 254 transitions. [2023-11-29 04:43:40,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-29 04:43:40,096 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 254 transitions. [2023-11-29 04:43:40,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 04:43:40,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:43:40,097 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:43:40,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 04:43:40,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:40,297 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:43:40,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:43:40,298 INFO L85 PathProgramCache]: Analyzing trace with hash 569977766, now seen corresponding path program 2 times [2023-11-29 04:43:40,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:43:40,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40635973] [2023-11-29 04:43:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:40,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:43:40,310 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:43:40,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084402251] [2023-11-29 04:43:40,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:43:40,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:40,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:43:40,312 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:43:40,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 04:43:40,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:43:40,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:43:40,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 04:43:40,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:43:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-29 04:43:40,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:43:41,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:43:41,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40635973] [2023-11-29 04:43:41,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:43:41,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084402251] [2023-11-29 04:43:41,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084402251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:43:41,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:43:41,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-29 04:43:41,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330791180] [2023-11-29 04:43:41,292 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:43:41,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:43:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:43:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:43:41,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:43:41,293 INFO L87 Difference]: Start difference. First operand 209 states and 254 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 6 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 04:43:41,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:43:41,738 INFO L93 Difference]: Finished difference Result 243 states and 292 transitions. [2023-11-29 04:43:41,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:43:41,738 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 6 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 113 [2023-11-29 04:43:41,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:43:41,740 INFO L225 Difference]: With dead ends: 243 [2023-11-29 04:43:41,740 INFO L226 Difference]: Without dead ends: 242 [2023-11-29 04:43:41,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:43:41,741 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 82 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:43:41,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 265 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:43:41,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-29 04:43:41,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 209. [2023-11-29 04:43:41,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 167 states have (on average 1.1317365269461077) internal successors, (189), 174 states have internal predecessors, (189), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 04:43:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 253 transitions. [2023-11-29 04:43:41,779 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 253 transitions. Word has length 113 [2023-11-29 04:43:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:43:41,779 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 253 transitions. [2023-11-29 04:43:41,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 6 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 04:43:41,779 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 253 transitions. [2023-11-29 04:43:41,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 04:43:41,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:43:41,780 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:43:41,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 04:43:41,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:41,980 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:43:41,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:43:41,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1910349523, now seen corresponding path program 2 times [2023-11-29 04:43:41,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:43:41,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722118980] [2023-11-29 04:43:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:41,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:43:41,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:43:41,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432321331] [2023-11-29 04:43:41,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:43:41,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:41,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:43:41,992 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:43:41,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 04:43:42,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:43:42,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:43:42,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:43:42,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:43:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-29 04:43:42,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:43:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-29 04:43:43,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:43:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722118980] [2023-11-29 04:43:43,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:43:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432321331] [2023-11-29 04:43:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432321331] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:43:43,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:43:43,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 04:43:43,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17223475] [2023-11-29 04:43:43,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:43:43,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:43:43,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:43:43,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:43:43,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:43:43,493 INFO L87 Difference]: Start difference. First operand 209 states and 253 transitions. Second operand has 16 states, 15 states have (on average 7.2) internal successors, (108), 16 states have internal predecessors, (108), 9 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-29 04:43:45,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:43:45,214 INFO L93 Difference]: Finished difference Result 428 states and 516 transitions. [2023-11-29 04:43:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:43:45,215 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.2) internal successors, (108), 16 states have internal predecessors, (108), 9 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 135 [2023-11-29 04:43:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:43:45,217 INFO L225 Difference]: With dead ends: 428 [2023-11-29 04:43:45,217 INFO L226 Difference]: Without dead ends: 427 [2023-11-29 04:43:45,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=286, Invalid=526, Unknown=0, NotChecked=0, Total=812 [2023-11-29 04:43:45,219 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 448 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:43:45,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 405 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:43:45,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-11-29 04:43:45,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 331. [2023-11-29 04:43:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 277 states have (on average 1.1913357400722022) internal successors, (330), 284 states have internal predecessors, (330), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 04:43:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 418 transitions. [2023-11-29 04:43:45,272 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 418 transitions. Word has length 135 [2023-11-29 04:43:45,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:43:45,273 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 418 transitions. [2023-11-29 04:43:45,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.2) internal successors, (108), 16 states have internal predecessors, (108), 9 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-29 04:43:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 418 transitions. [2023-11-29 04:43:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 04:43:45,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:43:45,274 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:43:45,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-29 04:43:45,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:45,474 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:43:45,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:43:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash -570197465, now seen corresponding path program 3 times [2023-11-29 04:43:45,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:43:45,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453498232] [2023-11-29 04:43:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:43:45,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:43:45,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:43:45,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055692501] [2023-11-29 04:43:45,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:43:45,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:43:45,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:43:45,484 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:43:45,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 04:43:45,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 04:43:45,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:43:45,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:43:45,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:43:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2023-11-29 04:43:46,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:44:09,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:44:09,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453498232] [2023-11-29 04:44:09,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:44:09,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055692501] [2023-11-29 04:44:09,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055692501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:44:09,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:44:09,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 04:44:09,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758355134] [2023-11-29 04:44:09,517 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:44:09,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:44:09,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:44:09,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:44:09,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:44:09,518 INFO L87 Difference]: Start difference. First operand 331 states and 418 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-29 04:44:11,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:44:11,080 INFO L93 Difference]: Finished difference Result 380 states and 473 transitions. [2023-11-29 04:44:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:44:11,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 136 [2023-11-29 04:44:11,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:44:11,082 INFO L225 Difference]: With dead ends: 380 [2023-11-29 04:44:11,082 INFO L226 Difference]: Without dead ends: 379 [2023-11-29 04:44:11,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:44:11,083 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 79 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:44:11,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 238 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 04:44:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-29 04:44:11,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 331. [2023-11-29 04:44:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 277 states have (on average 1.184115523465704) internal successors, (328), 284 states have internal predecessors, (328), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 04:44:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 416 transitions. [2023-11-29 04:44:11,142 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 416 transitions. Word has length 136 [2023-11-29 04:44:11,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:44:11,142 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 416 transitions. [2023-11-29 04:44:11,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-29 04:44:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 416 transitions. [2023-11-29 04:44:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-29 04:44:11,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:44:11,143 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:44:11,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 04:44:11,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:44:11,343 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:44:11,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:44:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1894859829, now seen corresponding path program 1 times [2023-11-29 04:44:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:44:11,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837587733] [2023-11-29 04:44:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:44:11,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:44:11,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:44:11,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795646899] [2023-11-29 04:44:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:44:11,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:44:11,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:44:11,352 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:44:11,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 04:44:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:44:11,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:44:11,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:44:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-11-29 04:44:11,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:44:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-11-29 04:44:13,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:44:13,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837587733] [2023-11-29 04:44:13,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:44:13,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795646899] [2023-11-29 04:44:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795646899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:44:13,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:44:13,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 04:44:13,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349678503] [2023-11-29 04:44:13,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:44:13,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:44:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:44:13,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:44:13,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:44:13,198 INFO L87 Difference]: Start difference. First operand 331 states and 416 transitions. Second operand has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 9 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2023-11-29 04:44:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:44:14,476 INFO L93 Difference]: Finished difference Result 626 states and 770 transitions. [2023-11-29 04:44:14,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:44:14,476 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 9 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) Word has length 137 [2023-11-29 04:44:14,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:44:14,480 INFO L225 Difference]: With dead ends: 626 [2023-11-29 04:44:14,480 INFO L226 Difference]: Without dead ends: 625 [2023-11-29 04:44:14,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=208, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:44:14,481 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 275 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:44:14,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 491 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:44:14,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2023-11-29 04:44:14,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 498. [2023-11-29 04:44:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 422 states have (on average 1.1753554502369667) internal successors, (496), 429 states have internal predecessors, (496), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-29 04:44:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 628 transitions. [2023-11-29 04:44:14,574 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 628 transitions. Word has length 137 [2023-11-29 04:44:14,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:44:14,575 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 628 transitions. [2023-11-29 04:44:14,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 9 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2023-11-29 04:44:14,575 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 628 transitions. [2023-11-29 04:44:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 04:44:14,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:44:14,576 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:44:14,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 04:44:14,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:44:14,777 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:44:14,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:44:14,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1796052681, now seen corresponding path program 2 times [2023-11-29 04:44:14,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:44:14,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227863602] [2023-11-29 04:44:14,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:44:14,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:44:14,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:44:14,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799883479] [2023-11-29 04:44:14,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:44:14,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:44:14,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:44:14,787 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:44:14,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 04:44:14,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:44:14,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:44:14,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 04:44:14,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:44:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-11-29 04:44:15,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:44:19,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:44:19,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227863602] [2023-11-29 04:44:19,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:44:19,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799883479] [2023-11-29 04:44:19,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799883479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:44:19,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:44:19,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-29 04:44:19,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502485350] [2023-11-29 04:44:19,233 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:44:19,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:44:19,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:44:19,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:44:19,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:44:19,234 INFO L87 Difference]: Start difference. First operand 498 states and 628 transitions. Second operand has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 18 states have internal predecessors, (62), 7 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-29 04:44:20,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:44:20,784 INFO L93 Difference]: Finished difference Result 523 states and 655 transitions. [2023-11-29 04:44:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 04:44:20,785 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 18 states have internal predecessors, (62), 7 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) Word has length 138 [2023-11-29 04:44:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:44:20,787 INFO L225 Difference]: With dead ends: 523 [2023-11-29 04:44:20,787 INFO L226 Difference]: Without dead ends: 522 [2023-11-29 04:44:20,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=262, Invalid=1144, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 04:44:20,788 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 119 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:44:20,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 650 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:44:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-11-29 04:44:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 498. [2023-11-29 04:44:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 422 states have (on average 1.1729857819905214) internal successors, (495), 429 states have internal predecessors, (495), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-29 04:44:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 627 transitions. [2023-11-29 04:44:20,884 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 627 transitions. Word has length 138 [2023-11-29 04:44:20,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:44:20,884 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 627 transitions. [2023-11-29 04:44:20,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 18 states have internal predecessors, (62), 7 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-29 04:44:20,884 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 627 transitions. [2023-11-29 04:44:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 04:44:20,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:44:20,885 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:44:20,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 04:44:21,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:44:21,086 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:44:21,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:44:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1014070938, now seen corresponding path program 4 times [2023-11-29 04:44:21,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:44:21,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751731869] [2023-11-29 04:44:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:44:21,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:44:21,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:44:21,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922371294] [2023-11-29 04:44:21,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:44:21,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:44:21,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:44:21,096 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:44:21,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 04:44:21,267 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:44:21,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:44:21,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:44:21,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:44:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 3 proven. 53 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-29 04:44:21,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:44:22,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:44:22,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751731869] [2023-11-29 04:44:22,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:44:22,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922371294] [2023-11-29 04:44:22,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922371294] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:44:22,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:44:22,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-29 04:44:22,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327863747] [2023-11-29 04:44:22,797 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:44:22,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:44:22,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:44:22,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:44:22,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:44:22,798 INFO L87 Difference]: Start difference. First operand 498 states and 627 transitions. Second operand has 16 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 7 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-29 04:44:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:44:23,610 INFO L93 Difference]: Finished difference Result 552 states and 685 transitions. [2023-11-29 04:44:23,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:44:23,610 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 7 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 140 [2023-11-29 04:44:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:44:23,613 INFO L225 Difference]: With dead ends: 552 [2023-11-29 04:44:23,613 INFO L226 Difference]: Without dead ends: 551 [2023-11-29 04:44:23,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-11-29 04:44:23,614 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 106 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:44:23,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 429 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:44:23,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-11-29 04:44:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 498. [2023-11-29 04:44:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 422 states have (on average 1.1682464454976302) internal successors, (493), 429 states have internal predecessors, (493), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-29 04:44:23,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 625 transitions. [2023-11-29 04:44:23,742 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 625 transitions. Word has length 140 [2023-11-29 04:44:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:44:23,743 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 625 transitions. [2023-11-29 04:44:23,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 7 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-29 04:44:23,743 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 625 transitions. [2023-11-29 04:44:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 04:44:23,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:44:23,745 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:44:23,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-29 04:44:23,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:44:23,946 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:44:23,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:44:23,947 INFO L85 PathProgramCache]: Analyzing trace with hash -435402116, now seen corresponding path program 3 times [2023-11-29 04:44:23,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:44:23,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834701339] [2023-11-29 04:44:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:44:23,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:44:23,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:44:23,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223905123] [2023-11-29 04:44:23,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:44:23,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:44:23,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:44:23,959 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:44:23,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 04:44:24,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 04:44:24,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:44:24,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 04:44:24,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:44:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 21 proven. 75 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-11-29 04:44:25,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:45:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 18 proven. 72 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-29 04:45:49,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:45:49,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834701339] [2023-11-29 04:45:49,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:45:49,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223905123] [2023-11-29 04:45:49,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223905123] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:45:49,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:45:49,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2023-11-29 04:45:49,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289009951] [2023-11-29 04:45:49,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:45:49,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 04:45:49,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:45:49,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 04:45:49,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 04:45:49,798 INFO L87 Difference]: Start difference. First operand 498 states and 625 transitions. Second operand has 35 states, 34 states have (on average 4.029411764705882) internal successors, (137), 34 states have internal predecessors, (137), 11 states have call successors, (31), 1 states have call predecessors, (31), 3 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-29 04:45:57,911 WARN L293 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 204 DAG size of output: 88 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:46:07,339 WARN L293 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 161 DAG size of output: 89 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:46:18,763 WARN L293 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 157 DAG size of output: 76 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:46:22,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:46:34,424 WARN L293 SmtUtils]: Spent 9.08s on a formula simplification. DAG size of input: 168 DAG size of output: 88 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:46:38,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:46:51,501 WARN L293 SmtUtils]: Spent 11.48s on a formula simplification. DAG size of input: 154 DAG size of output: 124 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:48:05,100 WARN L293 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 127 DAG size of output: 122 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:48:08,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:48:56,136 WARN L293 SmtUtils]: Spent 40.95s on a formula simplification. DAG size of input: 134 DAG size of output: 110 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:49:05,590 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 164 DAG size of output: 85 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:49:08,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:49:25,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:49:42,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:50:06,925 WARN L293 SmtUtils]: Spent 17.06s on a formula simplification. DAG size of input: 146 DAG size of output: 122 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:50:21,597 WARN L293 SmtUtils]: Spent 12.53s on a formula simplification. DAG size of input: 164 DAG size of output: 83 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:50:32,139 WARN L293 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 88 DAG size of output: 75 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:50:38,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:50:55,473 WARN L293 SmtUtils]: Spent 15.59s on a formula simplification. DAG size of input: 172 DAG size of output: 134 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:51:09,793 WARN L293 SmtUtils]: Spent 12.49s on a formula simplification. DAG size of input: 172 DAG size of output: 123 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:51:13,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:51:37,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:52:22,033 WARN L293 SmtUtils]: Spent 43.18s on a formula simplification. DAG size of input: 159 DAG size of output: 107 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:52:56,110 WARN L293 SmtUtils]: Spent 25.39s on a formula simplification. DAG size of input: 124 DAG size of output: 106 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:53:09,431 WARN L293 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 195 DAG size of output: 90 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:53:15,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:53:44,337 WARN L293 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 177 DAG size of output: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:53:52,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:53:56,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:54:29,523 WARN L293 SmtUtils]: Spent 26.09s on a formula simplification. DAG size of input: 156 DAG size of output: 121 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:55:08,778 WARN L293 SmtUtils]: Spent 25.73s on a formula simplification. DAG size of input: 137 DAG size of output: 113 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:55:24,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:55:25,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:55:38,328 WARN L293 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 114 DAG size of output: 82 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:55:43,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:55:47,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:55:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:55:51,507 INFO L93 Difference]: Finished difference Result 782 states and 973 transitions. [2023-11-29 04:55:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-29 04:55:51,507 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 4.029411764705882) internal successors, (137), 34 states have internal predecessors, (137), 11 states have call successors, (31), 1 states have call predecessors, (31), 3 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) Word has length 142 [2023-11-29 04:55:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:55:51,512 INFO L225 Difference]: With dead ends: 782 [2023-11-29 04:55:51,512 INFO L226 Difference]: Without dead ends: 641 [2023-11-29 04:55:51,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 511.2s TimeCoverageRelationStatistics Valid=1399, Invalid=5235, Unknown=8, NotChecked=0, Total=6642 [2023-11-29 04:55:51,515 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 759 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 217 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:55:51,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 638 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2524 Invalid, 5 Unknown, 0 Unchecked, 98.6s Time] [2023-11-29 04:55:51,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-29 04:55:51,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 559. [2023-11-29 04:55:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 477 states have (on average 1.1656184486373165) internal successors, (556), 484 states have internal predecessors, (556), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-29 04:55:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 700 transitions. [2023-11-29 04:55:51,676 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 700 transitions. Word has length 142 [2023-11-29 04:55:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:55:51,676 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 700 transitions. [2023-11-29 04:55:51,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 4.029411764705882) internal successors, (137), 34 states have internal predecessors, (137), 11 states have call successors, (31), 1 states have call predecessors, (31), 3 states have return successors, (32), 11 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-29 04:55:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 700 transitions. [2023-11-29 04:55:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-29 04:55:51,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:55:51,678 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:51,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 04:55:51,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:55:51,878 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:55:51,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1466706235, now seen corresponding path program 2 times [2023-11-29 04:55:51,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:51,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143583722] [2023-11-29 04:55:51,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:51,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:51,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:55:51,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901980320] [2023-11-29 04:55:51,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:55:51,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:55:51,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:55:51,888 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:55:51,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 04:55:52,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:55:52,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:55:52,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:55:52,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:55:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-11-29 04:55:53,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:55:54,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:54,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143583722] [2023-11-29 04:55:54,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:55:54,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901980320] [2023-11-29 04:55:54,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901980320] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:55:54,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:55:54,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-29 04:55:54,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224645654] [2023-11-29 04:55:54,241 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:55:54,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:55:54,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:54,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:55:54,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:55:54,242 INFO L87 Difference]: Start difference. First operand 559 states and 700 transitions. Second operand has 17 states, 16 states have (on average 4.5) internal successors, (72), 17 states have internal predecessors, (72), 7 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-11-29 04:55:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:55:55,293 INFO L93 Difference]: Finished difference Result 566 states and 706 transitions. [2023-11-29 04:55:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 04:55:55,293 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.5) internal successors, (72), 17 states have internal predecessors, (72), 7 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 156 [2023-11-29 04:55:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:55:55,297 INFO L225 Difference]: With dead ends: 566 [2023-11-29 04:55:55,297 INFO L226 Difference]: Without dead ends: 565 [2023-11-29 04:55:55,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2023-11-29 04:55:55,298 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 35 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:55:55,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 393 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:55:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-11-29 04:55:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 560. [2023-11-29 04:55:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 478 states have (on average 1.1652719665271967) internal successors, (557), 485 states have internal predecessors, (557), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-29 04:55:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 701 transitions. [2023-11-29 04:55:55,457 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 701 transitions. Word has length 156 [2023-11-29 04:55:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:55:55,457 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 701 transitions. [2023-11-29 04:55:55,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.5) internal successors, (72), 17 states have internal predecessors, (72), 7 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-11-29 04:55:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 701 transitions. [2023-11-29 04:55:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 04:55:55,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:55:55,459 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:55,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-11-29 04:55:55,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 04:55:55,659 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:55:55,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1776746846, now seen corresponding path program 2 times [2023-11-29 04:55:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:55,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820904761] [2023-11-29 04:55:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:55,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:55,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:55:55,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834261115] [2023-11-29 04:55:55,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:55:55,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:55:55,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:55:55,669 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:55:55,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 04:55:55,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:55:55,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:55:55,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 04:55:55,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:55:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2023-11-29 04:55:56,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:00,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:56:00,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820904761] [2023-11-29 04:56:00,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:56:00,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834261115] [2023-11-29 04:56:00,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834261115] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:56:00,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:56:00,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-29 04:56:00,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984526137] [2023-11-29 04:56:00,745 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:56:00,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:56:00,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:56:00,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:56:00,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=437, Unknown=1, NotChecked=0, Total=552 [2023-11-29 04:56:00,746 INFO L87 Difference]: Start difference. First operand 560 states and 701 transitions. Second operand has 19 states, 18 states have (on average 4.222222222222222) internal successors, (76), 19 states have internal predecessors, (76), 8 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-29 04:56:01,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:56:01,621 INFO L93 Difference]: Finished difference Result 694 states and 866 transitions. [2023-11-29 04:56:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:56:01,622 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.222222222222222) internal successors, (76), 19 states have internal predecessors, (76), 8 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 157 [2023-11-29 04:56:01,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:56:01,625 INFO L225 Difference]: With dead ends: 694 [2023-11-29 04:56:01,625 INFO L226 Difference]: Without dead ends: 536 [2023-11-29 04:56:01,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=273, Invalid=1286, Unknown=1, NotChecked=0, Total=1560 [2023-11-29 04:56:01,627 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 117 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:56:01,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 468 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:56:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-11-29 04:56:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 533. [2023-11-29 04:56:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 453 states have (on average 1.163355408388521) internal successors, (527), 460 states have internal predecessors, (527), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-29 04:56:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 667 transitions. [2023-11-29 04:56:01,790 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 667 transitions. Word has length 157 [2023-11-29 04:56:01,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:01,791 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 667 transitions. [2023-11-29 04:56:01,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.222222222222222) internal successors, (76), 19 states have internal predecessors, (76), 8 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-29 04:56:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 667 transitions. [2023-11-29 04:56:01,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 04:56:01,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:01,793 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:56:01,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 04:56:01,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 04:56:01,993 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 04:56:01,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1943268868, now seen corresponding path program 2 times [2023-11-29 04:56:01,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:56:01,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961248592] [2023-11-29 04:56:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:01,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:56:02,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:56:02,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849896814] [2023-11-29 04:56:02,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:56:02,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:56:02,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:56:02,005 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:56:02,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653030a5-d413-4389-b17d-332592cf63e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 04:56:02,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:56:02,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:56:02,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 04:56:02,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2023-11-29 04:56:03,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-11-29 04:56:30,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:56:30,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961248592] [2023-11-29 04:56:30,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:56:30,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849896814] [2023-11-29 04:56:30,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849896814] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:56:30,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:56:30,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18] total 38 [2023-11-29 04:56:30,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704227039] [2023-11-29 04:56:30,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:56:30,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 04:56:30,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:56:30,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 04:56:30,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=1150, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 04:56:30,800 INFO L87 Difference]: Start difference. First operand 533 states and 667 transitions. Second operand has 39 states, 38 states have (on average 3.973684210526316) internal successors, (151), 39 states have internal predecessors, (151), 14 states have call successors, (35), 1 states have call predecessors, (35), 3 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36)