./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme --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 a70bdaebce973cfb63a6da68866c665cdef037b6b862a38db5ed10fbf681a6e5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:06,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:07,015 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:45:07,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:07,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:07,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:07,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:07,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:07,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:07,053 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:07,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:07,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:07,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:07,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:07,056 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:07,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:07,057 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:07,058 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:07,059 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:07,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:07,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:07,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:07,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:07,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:07,063 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:45:07,063 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:45:07,064 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:07,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:07,065 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:07,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:07,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:07,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:07,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:07,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:07,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:07,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:07,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:07,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:07,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:07,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:07,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:07,072 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:07,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:07,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:07,072 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_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a70bdaebce973cfb63a6da68866c665cdef037b6b862a38db5ed10fbf681a6e5 [2023-11-26 11:45:07,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:07,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:07,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:07,361 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:07,362 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:07,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound50.c [2023-11-26 11:45:10,492 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:10,779 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:10,780 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound50.c [2023-11-26 11:45:10,789 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/data/d503daaba/15956b33744b4f44967503ca6a5dd7f0/FLAG0af4aff23 [2023-11-26 11:45:10,808 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/data/d503daaba/15956b33744b4f44967503ca6a5dd7f0 [2023-11-26 11:45:10,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:10,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:10,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:10,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:10,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:10,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:10" (1/1) ... [2023-11-26 11:45:10,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792c2703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:10, skipping insertion in model container [2023-11-26 11:45:10,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:10" (1/1) ... [2023-11-26 11:45:10,854 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:11,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:11,149 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:11,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:11,213 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:11,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11 WrapperNode [2023-11-26 11:45:11,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:11,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:11,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:11,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:11,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,302 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 135 [2023-11-26 11:45:11,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:11,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:11,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:11,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:11,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,319 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,334 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]. [2023-11-26 11:45:11,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:11,350 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:11,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:11,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:11,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (1/1) ... [2023-11-26 11:45:11,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:11,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:11,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:11,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:11,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:45:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:45:11,517 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:11,520 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:12,341 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:12,390 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:12,390 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:45:12,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:12 BoogieIcfgContainer [2023-11-26 11:45:12,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:12,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:12,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:12,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:12,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:10" (1/3) ... [2023-11-26 11:45:12,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383e62c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:12, skipping insertion in model container [2023-11-26 11:45:12,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:11" (2/3) ... [2023-11-26 11:45:12,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383e62c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:12, skipping insertion in model container [2023-11-26 11:45:12,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:12" (3/3) ... [2023-11-26 11:45:12,402 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound50.c [2023-11-26 11:45:12,427 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:12,428 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 86 error locations. [2023-11-26 11:45:12,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:12,506 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;@43755bc6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:12,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2023-11-26 11:45:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 96 states have (on average 1.9479166666666667) internal successors, (187), 182 states have internal predecessors, (187), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:12,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 11:45:12,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:12,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:45:12,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:12,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:12,533 INFO L85 PathProgramCache]: Analyzing trace with hash 238429960, now seen corresponding path program 1 times [2023-11-26 11:45:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:12,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698959550] [2023-11-26 11:45:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:12,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:12,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:12,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698959550] [2023-11-26 11:45:12,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698959550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:12,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:12,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:12,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779646708] [2023-11-26 11:45:12,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:12,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:45:12,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:12,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:45:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:12,762 INFO L87 Difference]: Start difference. First operand has 187 states, 96 states have (on average 1.9479166666666667) internal successors, (187), 182 states have internal predecessors, (187), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:12,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:12,845 INFO L93 Difference]: Finished difference Result 359 states and 386 transitions. [2023-11-26 11:45:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:45:12,848 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-26 11:45:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:12,862 INFO L225 Difference]: With dead ends: 359 [2023-11-26 11:45:12,862 INFO L226 Difference]: Without dead ends: 171 [2023-11-26 11:45:12,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:12,876 INFO L413 NwaCegarLoop]: 175 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, 175 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 [2023-11-26 11:45:12,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:12,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-26 11:45:12,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-11-26 11:45:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 95 states have (on average 1.7789473684210526) internal successors, (169), 167 states have internal predecessors, (169), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2023-11-26 11:45:12,957 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 5 [2023-11-26 11:45:12,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:12,957 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2023-11-26 11:45:12,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2023-11-26 11:45:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 11:45:12,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:12,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:45:12,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:45:12,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:12,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:12,963 INFO L85 PathProgramCache]: Analyzing trace with hash 238486053, now seen corresponding path program 1 times [2023-11-26 11:45:12,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:12,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023520498] [2023-11-26 11:45:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:12,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:13,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:13,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023520498] [2023-11-26 11:45:13,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023520498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:13,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:13,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:13,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443693247] [2023-11-26 11:45:13,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:13,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:13,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:13,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:13,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:13,140 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:13,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:13,263 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2023-11-26 11:45:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:13,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-26 11:45:13,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:13,271 INFO L225 Difference]: With dead ends: 252 [2023-11-26 11:45:13,273 INFO L226 Difference]: Without dead ends: 175 [2023-11-26 11:45:13,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:13,277 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 4 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:13,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 500 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:13,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-26 11:45:13,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-11-26 11:45:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 99 states have (on average 1.7474747474747474) internal successors, (173), 171 states have internal predecessors, (173), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2023-11-26 11:45:13,299 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 5 [2023-11-26 11:45:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:13,300 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2023-11-26 11:45:13,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2023-11-26 11:45:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:45:13,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:13,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:13,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:45:13,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:13,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash 862145165, now seen corresponding path program 1 times [2023-11-26 11:45:13,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:13,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613536818] [2023-11-26 11:45:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:13,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:13,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613536818] [2023-11-26 11:45:13,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613536818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:13,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:13,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:13,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660712133] [2023-11-26 11:45:13,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:13,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:13,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:13,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:13,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:13,459 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:14,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:14,013 INFO L93 Difference]: Finished difference Result 319 states and 323 transitions. [2023-11-26 11:45:14,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:14,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-26 11:45:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:14,017 INFO L225 Difference]: With dead ends: 319 [2023-11-26 11:45:14,017 INFO L226 Difference]: Without dead ends: 263 [2023-11-26 11:45:14,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:14,019 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 90 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:14,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 124 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:45:14,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-26 11:45:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 249. [2023-11-26 11:45:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 172 states have (on average 1.5116279069767442) internal successors, (260), 244 states have internal predecessors, (260), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 266 transitions. [2023-11-26 11:45:14,054 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 266 transitions. Word has length 8 [2023-11-26 11:45:14,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:14,055 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 266 transitions. [2023-11-26 11:45:14,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:14,063 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 266 transitions. [2023-11-26 11:45:14,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:45:14,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:14,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:14,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:45:14,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:14,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1590441751, now seen corresponding path program 1 times [2023-11-26 11:45:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:14,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519847409] [2023-11-26 11:45:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:14,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:14,106 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:14,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [902136686] [2023-11-26 11:45:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:14,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:14,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:14,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:14,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:45:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:14,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:14,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:14,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:14,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519847409] [2023-11-26 11:45:14,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:14,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902136686] [2023-11-26 11:45:14,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902136686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:14,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:14,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:14,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16967446] [2023-11-26 11:45:14,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:14,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:14,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:14,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:14,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:14,302 INFO L87 Difference]: Start difference. First operand 249 states and 266 transitions. Second operand has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:14,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:14,364 INFO L93 Difference]: Finished difference Result 249 states and 266 transitions. [2023-11-26 11:45:14,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:14,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-26 11:45:14,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:14,367 INFO L225 Difference]: With dead ends: 249 [2023-11-26 11:45:14,367 INFO L226 Difference]: Without dead ends: 246 [2023-11-26 11:45:14,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:14,371 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 127 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:14,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 150 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:14,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-26 11:45:14,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2023-11-26 11:45:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 172 states have (on average 1.4825581395348837) internal successors, (255), 241 states have internal predecessors, (255), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:14,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 261 transitions. [2023-11-26 11:45:14,404 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 261 transitions. Word has length 36 [2023-11-26 11:45:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:14,405 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 261 transitions. [2023-11-26 11:45:14,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:14,405 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 261 transitions. [2023-11-26 11:45:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-26 11:45:14,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:14,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:14,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:45:14,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:14,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:14,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:14,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2059053912, now seen corresponding path program 1 times [2023-11-26 11:45:14,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:14,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974217861] [2023-11-26 11:45:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:14,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:14,631 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:14,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394461229] [2023-11-26 11:45:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:14,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:14,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:14,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:14,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:45:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:14,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:14,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:14,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:14,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974217861] [2023-11-26 11:45:14,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:14,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394461229] [2023-11-26 11:45:14,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394461229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:14,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:14,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:14,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480609510] [2023-11-26 11:45:14,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:14,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:14,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:14,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:14,774 INFO L87 Difference]: Start difference. First operand 246 states and 261 transitions. Second operand has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:14,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:14,883 INFO L93 Difference]: Finished difference Result 271 states and 274 transitions. [2023-11-26 11:45:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:14,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-11-26 11:45:14,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:14,886 INFO L225 Difference]: With dead ends: 271 [2023-11-26 11:45:14,886 INFO L226 Difference]: Without dead ends: 269 [2023-11-26 11:45:14,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:14,887 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 66 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:14,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 290 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:14,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-26 11:45:14,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 246. [2023-11-26 11:45:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 172 states have (on average 1.4709302325581395) internal successors, (253), 241 states have internal predecessors, (253), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 259 transitions. [2023-11-26 11:45:14,899 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 259 transitions. Word has length 37 [2023-11-26 11:45:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:14,900 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 259 transitions. [2023-11-26 11:45:14,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 259 transitions. [2023-11-26 11:45:14,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 11:45:14,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:14,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:14,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:15,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:15,108 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:15,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:15,109 INFO L85 PathProgramCache]: Analyzing trace with hash 593838283, now seen corresponding path program 1 times [2023-11-26 11:45:15,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:15,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674765655] [2023-11-26 11:45:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:15,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:15,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:15,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616752975] [2023-11-26 11:45:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:15,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:15,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:15,125 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:15,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:45:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:15,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:15,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:15,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:15,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:15,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674765655] [2023-11-26 11:45:15,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:15,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616752975] [2023-11-26 11:45:15,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616752975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:15,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:15,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:15,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125714480] [2023-11-26 11:45:15,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:15,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:15,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:15,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:15,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:15,363 INFO L87 Difference]: Start difference. First operand 246 states and 259 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:15,635 INFO L93 Difference]: Finished difference Result 269 states and 272 transitions. [2023-11-26 11:45:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:15,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-26 11:45:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:15,638 INFO L225 Difference]: With dead ends: 269 [2023-11-26 11:45:15,638 INFO L226 Difference]: Without dead ends: 264 [2023-11-26 11:45:15,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:15,642 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 149 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:15,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 227 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:45:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-26 11:45:15,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 249. [2023-11-26 11:45:15,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 175 states have (on average 1.4457142857142857) internal successors, (253), 244 states have internal predecessors, (253), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 259 transitions. [2023-11-26 11:45:15,664 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 259 transitions. Word has length 38 [2023-11-26 11:45:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:15,665 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 259 transitions. [2023-11-26 11:45:15,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 259 transitions. [2023-11-26 11:45:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 11:45:15,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:15,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:15,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:15,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:15,875 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:15,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:15,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1229117706, now seen corresponding path program 1 times [2023-11-26 11:45:15,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:15,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277264212] [2023-11-26 11:45:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:15,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:15,889 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:15,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403577609] [2023-11-26 11:45:15,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:15,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:15,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:15,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:15,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:45:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:15,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:15,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:16,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:16,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277264212] [2023-11-26 11:45:16,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403577609] [2023-11-26 11:45:16,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403577609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:16,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:16,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:16,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494931177] [2023-11-26 11:45:16,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:16,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:16,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:16,083 INFO L87 Difference]: Start difference. First operand 249 states and 259 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:16,481 INFO L93 Difference]: Finished difference Result 264 states and 277 transitions. [2023-11-26 11:45:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:16,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-26 11:45:16,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:16,483 INFO L225 Difference]: With dead ends: 264 [2023-11-26 11:45:16,483 INFO L226 Difference]: Without dead ends: 210 [2023-11-26 11:45:16,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:16,485 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 142 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:16,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 67 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:45:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-26 11:45:16,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2023-11-26 11:45:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 151 states have (on average 1.4105960264900663) internal successors, (213), 203 states have internal predecessors, (213), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 219 transitions. [2023-11-26 11:45:16,497 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 219 transitions. Word has length 39 [2023-11-26 11:45:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:16,497 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 219 transitions. [2023-11-26 11:45:16,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 219 transitions. [2023-11-26 11:45:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 11:45:16,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:16,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:16,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 11:45:16,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:16,705 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:16,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:16,705 INFO L85 PathProgramCache]: Analyzing trace with hash -396838182, now seen corresponding path program 1 times [2023-11-26 11:45:16,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:16,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093040924] [2023-11-26 11:45:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:16,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:16,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:16,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181055799] [2023-11-26 11:45:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:16,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:16,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:16,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:16,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:45:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:16,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:16,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:16,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:16,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:16,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093040924] [2023-11-26 11:45:16,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:16,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181055799] [2023-11-26 11:45:16,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181055799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:16,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:16,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:16,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975784213] [2023-11-26 11:45:16,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:16,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:16,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:16,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:16,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:16,903 INFO L87 Difference]: Start difference. First operand 208 states and 219 transitions. Second operand has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:16,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:16,921 INFO L93 Difference]: Finished difference Result 208 states and 219 transitions. [2023-11-26 11:45:16,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:16,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2023-11-26 11:45:16,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:16,923 INFO L225 Difference]: With dead ends: 208 [2023-11-26 11:45:16,924 INFO L226 Difference]: Without dead ends: 207 [2023-11-26 11:45:16,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:16,925 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 102 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:16,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 152 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:16,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-26 11:45:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-11-26 11:45:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 151 states have (on average 1.3973509933774835) internal successors, (211), 202 states have internal predecessors, (211), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 217 transitions. [2023-11-26 11:45:16,938 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 217 transitions. Word has length 48 [2023-11-26 11:45:16,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:16,940 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 217 transitions. [2023-11-26 11:45:16,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 217 transitions. [2023-11-26 11:45:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:45:16,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:16,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:16,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:17,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:17,149 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:17,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash 582918377, now seen corresponding path program 1 times [2023-11-26 11:45:17,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:17,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656543656] [2023-11-26 11:45:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:17,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:17,163 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:17,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606792159] [2023-11-26 11:45:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:17,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:17,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:17,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:45:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:17,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:17,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:17,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:17,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656543656] [2023-11-26 11:45:17,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:17,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606792159] [2023-11-26 11:45:17,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606792159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:17,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:17,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:17,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960930276] [2023-11-26 11:45:17,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:17,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:17,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:17,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:17,317 INFO L87 Difference]: Start difference. First operand 207 states and 217 transitions. Second operand has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:17,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:17,343 INFO L93 Difference]: Finished difference Result 208 states and 217 transitions. [2023-11-26 11:45:17,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:17,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2023-11-26 11:45:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:17,346 INFO L225 Difference]: With dead ends: 208 [2023-11-26 11:45:17,347 INFO L226 Difference]: Without dead ends: 207 [2023-11-26 11:45:17,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:17,350 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:17,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 293 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-26 11:45:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-11-26 11:45:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 151 states have (on average 1.390728476821192) internal successors, (210), 202 states have internal predecessors, (210), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 216 transitions. [2023-11-26 11:45:17,364 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 216 transitions. Word has length 49 [2023-11-26 11:45:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:17,365 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 216 transitions. [2023-11-26 11:45:17,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:17,365 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 216 transitions. [2023-11-26 11:45:17,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 11:45:17,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:17,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:17,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:17,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:17,580 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:17,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:17,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1870693805, now seen corresponding path program 1 times [2023-11-26 11:45:17,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:17,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232685651] [2023-11-26 11:45:17,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:17,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:17,602 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:17,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712266607] [2023-11-26 11:45:17,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:17,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:17,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:17,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:17,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:45:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:45:17,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:17,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:17,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:17,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232685651] [2023-11-26 11:45:17,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:17,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712266607] [2023-11-26 11:45:17,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712266607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:17,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:17,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:17,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736875800] [2023-11-26 11:45:17,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:17,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:17,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:17,804 INFO L87 Difference]: Start difference. First operand 207 states and 216 transitions. Second operand has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:18,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:18,274 INFO L93 Difference]: Finished difference Result 356 states and 372 transitions. [2023-11-26 11:45:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:18,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2023-11-26 11:45:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:18,277 INFO L225 Difference]: With dead ends: 356 [2023-11-26 11:45:18,278 INFO L226 Difference]: Without dead ends: 315 [2023-11-26 11:45:18,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:18,279 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 100 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:18,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 129 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:45:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-26 11:45:18,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 292. [2023-11-26 11:45:18,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 234 states have (on average 1.3034188034188035) internal successors, (305), 285 states have internal predecessors, (305), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 11:45:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 315 transitions. [2023-11-26 11:45:18,298 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 315 transitions. Word has length 53 [2023-11-26 11:45:18,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:18,299 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 315 transitions. [2023-11-26 11:45:18,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 315 transitions. [2023-11-26 11:45:18,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 11:45:18,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:18,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-11-26 11:45:18,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:18,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:18,507 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:18,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:18,508 INFO L85 PathProgramCache]: Analyzing trace with hash 614294739, now seen corresponding path program 1 times [2023-11-26 11:45:18,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:18,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672710086] [2023-11-26 11:45:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:18,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:18,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:18,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643380372] [2023-11-26 11:45:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:18,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:18,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:18,525 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:18,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:45:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:18,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:18,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:18,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:18,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672710086] [2023-11-26 11:45:18,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643380372] [2023-11-26 11:45:18,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643380372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:18,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:18,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:18,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781214056] [2023-11-26 11:45:18,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:18,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:18,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:18,691 INFO L87 Difference]: Start difference. First operand 292 states and 315 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:18,868 INFO L93 Difference]: Finished difference Result 293 states and 315 transitions. [2023-11-26 11:45:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:18,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-11-26 11:45:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:18,871 INFO L225 Difference]: With dead ends: 293 [2023-11-26 11:45:18,871 INFO L226 Difference]: Without dead ends: 292 [2023-11-26 11:45:18,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:18,872 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 42 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:18,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 242 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:45:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-26 11:45:18,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2023-11-26 11:45:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 234 states have (on average 1.2991452991452992) internal successors, (304), 285 states have internal predecessors, (304), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 11:45:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 314 transitions. [2023-11-26 11:45:18,888 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 314 transitions. Word has length 59 [2023-11-26 11:45:18,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:18,888 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 314 transitions. [2023-11-26 11:45:18,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 314 transitions. [2023-11-26 11:45:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:45:18,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:18,893 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-11-26 11:45:18,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:19,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:45:19,099 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:19,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:19,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1926726037, now seen corresponding path program 1 times [2023-11-26 11:45:19,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:19,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687411026] [2023-11-26 11:45:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:19,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:19,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:19,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516096877] [2023-11-26 11:45:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:19,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:19,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:19,114 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:19,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:45:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:19,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:45:19,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:19,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:19,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:19,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687411026] [2023-11-26 11:45:19,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:19,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516096877] [2023-11-26 11:45:19,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516096877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:19,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:19,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108606804] [2023-11-26 11:45:19,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:19,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:19,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:19,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:19,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:19,289 INFO L87 Difference]: Start difference. First operand 292 states and 314 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:19,335 INFO L93 Difference]: Finished difference Result 292 states and 314 transitions. [2023-11-26 11:45:19,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:45:19,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-11-26 11:45:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:19,338 INFO L225 Difference]: With dead ends: 292 [2023-11-26 11:45:19,338 INFO L226 Difference]: Without dead ends: 291 [2023-11-26 11:45:19,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:45:19,340 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 100 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:19,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 434 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-26 11:45:19,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-11-26 11:45:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 234 states have (on average 1.2905982905982907) internal successors, (302), 284 states have internal predecessors, (302), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 11:45:19,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 312 transitions. [2023-11-26 11:45:19,356 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 312 transitions. Word has length 61 [2023-11-26 11:45:19,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:19,356 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 312 transitions. [2023-11-26 11:45:19,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 312 transitions. [2023-11-26 11:45:19,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:45:19,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:19,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-11-26 11:45:19,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:19,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:45:19,564 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:19,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:19,565 INFO L85 PathProgramCache]: Analyzing trace with hash -401034949, now seen corresponding path program 1 times [2023-11-26 11:45:19,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:19,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860979356] [2023-11-26 11:45:19,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:19,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:19,581 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:19,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949882079] [2023-11-26 11:45:19,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:19,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:19,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:19,583 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:19,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:45:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:19,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:45:19,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:19,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:19,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860979356] [2023-11-26 11:45:19,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:19,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949882079] [2023-11-26 11:45:19,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949882079] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:19,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:19,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-26 11:45:19,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774784711] [2023-11-26 11:45:19,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:19,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:45:19,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:19,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:45:19,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:45:19,911 INFO L87 Difference]: Start difference. First operand 291 states and 312 transitions. Second operand has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 10 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:20,106 INFO L93 Difference]: Finished difference Result 527 states and 544 transitions. [2023-11-26 11:45:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:45:20,107 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 10 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2023-11-26 11:45:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:20,110 INFO L225 Difference]: With dead ends: 527 [2023-11-26 11:45:20,111 INFO L226 Difference]: Without dead ends: 480 [2023-11-26 11:45:20,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:45:20,113 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 266 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:20,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1215 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:20,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-11-26 11:45:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 412. [2023-11-26 11:45:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 350 states have (on average 1.3571428571428572) internal successors, (475), 401 states have internal predecessors, (475), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-26 11:45:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 489 transitions. [2023-11-26 11:45:20,137 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 489 transitions. Word has length 62 [2023-11-26 11:45:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:20,137 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 489 transitions. [2023-11-26 11:45:20,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 10 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:20,138 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 489 transitions. [2023-11-26 11:45:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-26 11:45:20,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:20,142 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-26 11:45:20,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:20,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:45:20,343 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:20,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:20,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2123109400, now seen corresponding path program 1 times [2023-11-26 11:45:20,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:20,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093717375] [2023-11-26 11:45:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:20,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:20,356 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:20,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805056556] [2023-11-26 11:45:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:20,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:20,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:20,358 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:20,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:45:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:20,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:45:20,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:20,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:21,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:21,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093717375] [2023-11-26 11:45:21,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:21,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805056556] [2023-11-26 11:45:21,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805056556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:21,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:21,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-26 11:45:21,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692677078] [2023-11-26 11:45:21,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:21,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:45:21,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:21,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:45:21,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:45:21,028 INFO L87 Difference]: Start difference. First operand 412 states and 489 transitions. Second operand has 8 states, 7 states have (on average 25.285714285714285) internal successors, (177), 8 states have internal predecessors, (177), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:21,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:21,884 INFO L93 Difference]: Finished difference Result 480 states and 519 transitions. [2023-11-26 11:45:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:45:21,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 25.285714285714285) internal successors, (177), 8 states have internal predecessors, (177), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 93 [2023-11-26 11:45:21,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:21,889 INFO L225 Difference]: With dead ends: 480 [2023-11-26 11:45:21,889 INFO L226 Difference]: Without dead ends: 477 [2023-11-26 11:45:21,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:45:21,890 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 300 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:21,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 344 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 11:45:21,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-11-26 11:45:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 432. [2023-11-26 11:45:21,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 370 states have (on average 1.3486486486486486) internal successors, (499), 421 states have internal predecessors, (499), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-26 11:45:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 513 transitions. [2023-11-26 11:45:21,915 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 513 transitions. Word has length 93 [2023-11-26 11:45:21,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:21,915 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 513 transitions. [2023-11-26 11:45:21,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 25.285714285714285) internal successors, (177), 8 states have internal predecessors, (177), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:21,916 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 513 transitions. [2023-11-26 11:45:21,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-26 11:45:21,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:21,920 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-26 11:45:21,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:22,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 11:45:22,126 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:22,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1391882075, now seen corresponding path program 1 times [2023-11-26 11:45:22,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:22,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257928200] [2023-11-26 11:45:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:22,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:22,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:22,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841041590] [2023-11-26 11:45:22,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:22,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:22,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:22,162 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:22,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:45:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:22,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:45:22,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:22,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:35,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:35,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257928200] [2023-11-26 11:45:35,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:35,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841041590] [2023-11-26 11:45:35,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841041590] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:35,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:45:35,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 11:45:35,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834198225] [2023-11-26 11:45:35,182 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:35,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:35,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:35,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:35,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=51, Unknown=1, NotChecked=0, Total=90 [2023-11-26 11:45:35,184 INFO L87 Difference]: Start difference. First operand 432 states and 513 transitions. Second operand has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:35,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:35,849 INFO L93 Difference]: Finished difference Result 443 states and 513 transitions. [2023-11-26 11:45:35,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:45:35,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-11-26 11:45:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:35,853 INFO L225 Difference]: With dead ends: 443 [2023-11-26 11:45:35,853 INFO L226 Difference]: Without dead ends: 438 [2023-11-26 11:45:35,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=38, Invalid=51, Unknown=1, NotChecked=0, Total=90 [2023-11-26 11:45:35,854 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 111 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:35,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 121 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:45:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-26 11:45:35,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 432. [2023-11-26 11:45:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 370 states have (on average 1.335135135135135) internal successors, (494), 421 states have internal predecessors, (494), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-26 11:45:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 508 transitions. [2023-11-26 11:45:35,875 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 508 transitions. Word has length 94 [2023-11-26 11:45:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:35,876 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 508 transitions. [2023-11-26 11:45:35,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 508 transitions. [2023-11-26 11:45:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-26 11:45:35,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:35,877 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-26 11:45:35,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:36,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 11:45:36,083 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:36,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:36,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2117187673, now seen corresponding path program 1 times [2023-11-26 11:45:36,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:36,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498491747] [2023-11-26 11:45:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:36,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:36,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:36,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156881122] [2023-11-26 11:45:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:36,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:36,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:36,118 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:36,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:45:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:36,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:36,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:36,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:36,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498491747] [2023-11-26 11:45:36,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156881122] [2023-11-26 11:45:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156881122] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:36,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:36,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-26 11:45:36,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668420005] [2023-11-26 11:45:36,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:36,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:36,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:36,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:36,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:36,512 INFO L87 Difference]: Start difference. First operand 432 states and 508 transitions. Second operand has 6 states, 5 states have (on average 38.2) internal successors, (191), 6 states have internal predecessors, (191), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:45:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:36,578 INFO L93 Difference]: Finished difference Result 640 states and 683 transitions. [2023-11-26 11:45:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:45:36,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 38.2) internal successors, (191), 6 states have internal predecessors, (191), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 105 [2023-11-26 11:45:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:36,582 INFO L225 Difference]: With dead ends: 640 [2023-11-26 11:45:36,583 INFO L226 Difference]: Without dead ends: 639 [2023-11-26 11:45:36,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:36,584 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 219 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:36,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 663 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:36,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-11-26 11:45:36,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 471. [2023-11-26 11:45:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 408 states have (on average 1.3529411764705883) internal successors, (552), 459 states have internal predecessors, (552), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 568 transitions. [2023-11-26 11:45:36,607 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 568 transitions. Word has length 105 [2023-11-26 11:45:36,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:36,607 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 568 transitions. [2023-11-26 11:45:36,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 38.2) internal successors, (191), 6 states have internal predecessors, (191), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:45:36,608 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 568 transitions. [2023-11-26 11:45:36,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-26 11:45:36,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:36,609 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-26 11:45:36,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-26 11:45:36,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:45:36,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:36,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:36,815 INFO L85 PathProgramCache]: Analyzing trace with hash 599418141, now seen corresponding path program 1 times [2023-11-26 11:45:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:36,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210606714] [2023-11-26 11:45:36,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:36,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:36,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:36,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637678697] [2023-11-26 11:45:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:36,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:36,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:36,839 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:36,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:45:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:36,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:45:36,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:37,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:37,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210606714] [2023-11-26 11:45:37,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637678697] [2023-11-26 11:45:37,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637678697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:37,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:37,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-26 11:45:37,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384358268] [2023-11-26 11:45:37,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:37,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:45:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:37,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:45:37,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:45:37,468 INFO L87 Difference]: Start difference. First operand 471 states and 568 transitions. Second operand has 8 states, 7 states have (on average 28.428571428571427) internal successors, (199), 8 states have internal predecessors, (199), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:45:38,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:38,452 INFO L93 Difference]: Finished difference Result 512 states and 574 transitions. [2023-11-26 11:45:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:45:38,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 28.428571428571427) internal successors, (199), 8 states have internal predecessors, (199), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 109 [2023-11-26 11:45:38,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:38,457 INFO L225 Difference]: With dead ends: 512 [2023-11-26 11:45:38,457 INFO L226 Difference]: Without dead ends: 469 [2023-11-26 11:45:38,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:45:38,459 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 527 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:38,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 179 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:45:38,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-26 11:45:38,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 446. [2023-11-26 11:45:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 394 states have (on average 1.2055837563451777) internal successors, (475), 435 states have internal predecessors, (475), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 491 transitions. [2023-11-26 11:45:38,487 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 491 transitions. Word has length 109 [2023-11-26 11:45:38,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:38,488 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 491 transitions. [2023-11-26 11:45:38,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 28.428571428571427) internal successors, (199), 8 states have internal predecessors, (199), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:45:38,488 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 491 transitions. [2023-11-26 11:45:38,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-26 11:45:38,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:38,491 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:38,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-26 11:45:38,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:45:38,698 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:38,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:38,698 INFO L85 PathProgramCache]: Analyzing trace with hash 639891216, now seen corresponding path program 1 times [2023-11-26 11:45:38,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:38,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31939704] [2023-11-26 11:45:38,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:38,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:38,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:38,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751802467] [2023-11-26 11:45:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:38,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:38,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:38,748 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:38,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:45:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:38,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:45:38,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:39,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:40,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:40,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31939704] [2023-11-26 11:45:40,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:40,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751802467] [2023-11-26 11:45:40,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751802467] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:40,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:45:40,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 11:45:40,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970361100] [2023-11-26 11:45:40,404 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:40,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:45:40,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:40,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:45:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:45:40,406 INFO L87 Difference]: Start difference. First operand 446 states and 491 transitions. Second operand has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:41,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:41,284 INFO L93 Difference]: Finished difference Result 450 states and 494 transitions. [2023-11-26 11:45:41,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:45:41,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 143 [2023-11-26 11:45:41,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:41,289 INFO L225 Difference]: With dead ends: 450 [2023-11-26 11:45:41,289 INFO L226 Difference]: Without dead ends: 449 [2023-11-26 11:45:41,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:45:41,291 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 41 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:41,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 181 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 11:45:41,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-11-26 11:45:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2023-11-26 11:45:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 395 states have (on average 1.2050632911392405) internal successors, (476), 435 states have internal predecessors, (476), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 492 transitions. [2023-11-26 11:45:41,320 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 492 transitions. Word has length 143 [2023-11-26 11:45:41,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:41,321 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 492 transitions. [2023-11-26 11:45:41,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 492 transitions. [2023-11-26 11:45:41,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-26 11:45:41,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:41,324 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:41,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:41,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:45:41,531 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr83ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:41,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:41,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1638208557, now seen corresponding path program 1 times [2023-11-26 11:45:41,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:41,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419480840] [2023-11-26 11:45:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:41,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:41,562 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:41,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321590617] [2023-11-26 11:45:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:41,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:41,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:41,564 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:41,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 11:45:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:41,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:45:41,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:42,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:42,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:42,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419480840] [2023-11-26 11:45:42,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:42,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321590617] [2023-11-26 11:45:42,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321590617] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:42,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:42,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-26 11:45:42,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384299228] [2023-11-26 11:45:42,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:42,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:45:42,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:42,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:45:42,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:45:42,987 INFO L87 Difference]: Start difference. First operand 447 states and 492 transitions. Second operand has 12 states, 11 states have (on average 23.545454545454547) internal successors, (259), 12 states have internal predecessors, (259), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:45:46,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-26 11:45:47,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:47,431 INFO L93 Difference]: Finished difference Result 495 states and 537 transitions. [2023-11-26 11:45:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:45:47,432 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 23.545454545454547) internal successors, (259), 12 states have internal predecessors, (259), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 144 [2023-11-26 11:45:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:47,435 INFO L225 Difference]: With dead ends: 495 [2023-11-26 11:45:47,435 INFO L226 Difference]: Without dead ends: 456 [2023-11-26 11:45:47,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:45:47,437 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 92 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:47,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 208 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-26 11:45:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-11-26 11:45:47,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 447. [2023-11-26 11:45:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 395 states have (on average 1.2075949367088608) internal successors, (477), 435 states have internal predecessors, (477), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:45:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 493 transitions. [2023-11-26 11:45:47,461 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 493 transitions. Word has length 144 [2023-11-26 11:45:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:47,462 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 493 transitions. [2023-11-26 11:45:47,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 23.545454545454547) internal successors, (259), 12 states have internal predecessors, (259), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:45:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 493 transitions. [2023-11-26 11:45:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-26 11:45:47,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:47,465 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:47,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:47,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:47,673 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr78ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:47,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:47,674 INFO L85 PathProgramCache]: Analyzing trace with hash 454231346, now seen corresponding path program 1 times [2023-11-26 11:45:47,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:47,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600097320] [2023-11-26 11:45:47,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:47,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:47,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:47,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974057998] [2023-11-26 11:45:47,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:47,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:47,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:47,695 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:47,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 11:45:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:47,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:45:47,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:48,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:48,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:48,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600097320] [2023-11-26 11:45:48,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:48,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974057998] [2023-11-26 11:45:48,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974057998] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:48,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:48,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-26 11:45:48,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273575745] [2023-11-26 11:45:48,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:48,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:45:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:48,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:45:48,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:45:48,423 INFO L87 Difference]: Start difference. First operand 447 states and 493 transitions. Second operand has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:45:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:48,734 INFO L93 Difference]: Finished difference Result 739 states and 761 transitions. [2023-11-26 11:45:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-26 11:45:48,735 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 150 [2023-11-26 11:45:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:48,739 INFO L225 Difference]: With dead ends: 739 [2023-11-26 11:45:48,739 INFO L226 Difference]: Without dead ends: 640 [2023-11-26 11:45:48,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=391, Unknown=0, NotChecked=0, Total=600 [2023-11-26 11:45:48,741 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 462 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:48,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 991 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:48,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-11-26 11:45:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 556. [2023-11-26 11:45:48,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 500 states have (on average 1.26) internal successors, (630), 541 states have internal predecessors, (630), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:45:48,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 650 transitions. [2023-11-26 11:45:48,771 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 650 transitions. Word has length 150 [2023-11-26 11:45:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:48,772 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 650 transitions. [2023-11-26 11:45:48,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:45:48,772 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 650 transitions. [2023-11-26 11:45:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-26 11:45:48,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:48,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-26 11:45:48,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:48,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-26 11:45:48,987 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:48,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:48,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1483386347, now seen corresponding path program 2 times [2023-11-26 11:45:48,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:48,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563619538] [2023-11-26 11:45:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:48,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:49,013 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:49,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112894425] [2023-11-26 11:45:49,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:45:49,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:49,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:49,015 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:49,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 11:45:49,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:45:49,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:49,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:45:49,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:49,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:49,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:49,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563619538] [2023-11-26 11:45:49,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:49,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112894425] [2023-11-26 11:45:49,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112894425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:49,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:49,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:45:49,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668307008] [2023-11-26 11:45:49,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:49,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:49,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:49,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:49,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:49,530 INFO L87 Difference]: Start difference. First operand 556 states and 650 transitions. Second operand has 6 states, 5 states have (on average 28.6) internal successors, (143), 6 states have internal predecessors, (143), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:49,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:49,955 INFO L93 Difference]: Finished difference Result 561 states and 650 transitions. [2023-11-26 11:45:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:45:49,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 28.6) internal successors, (143), 6 states have internal predecessors, (143), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 150 [2023-11-26 11:45:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:49,959 INFO L225 Difference]: With dead ends: 561 [2023-11-26 11:45:49,959 INFO L226 Difference]: Without dead ends: 544 [2023-11-26 11:45:49,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:49,960 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 260 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:49,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 87 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:45:49,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-11-26 11:45:49,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 539. [2023-11-26 11:45:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 500 states have (on average 1.136) internal successors, (568), 524 states have internal predecessors, (568), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:45:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 588 transitions. [2023-11-26 11:45:49,990 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 588 transitions. Word has length 150 [2023-11-26 11:45:49,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:49,991 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 588 transitions. [2023-11-26 11:45:49,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 28.6) internal successors, (143), 6 states have internal predecessors, (143), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 588 transitions. [2023-11-26 11:45:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-26 11:45:49,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:49,994 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-26 11:45:50,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-26 11:45:50,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-26 11:45:50,200 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:50,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:50,201 INFO L85 PathProgramCache]: Analyzing trace with hash 378820335, now seen corresponding path program 1 times [2023-11-26 11:45:50,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:50,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803291132] [2023-11-26 11:45:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:50,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:50,223 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:50,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538108073] [2023-11-26 11:45:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:50,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:50,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:50,225 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:50,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 11:45:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:50,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:45:50,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:50,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:50,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:50,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803291132] [2023-11-26 11:45:50,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:50,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538108073] [2023-11-26 11:45:50,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538108073] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:50,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:45:50,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 11:45:50,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677811698] [2023-11-26 11:45:50,808 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:50,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:50,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:50,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:50,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:45:50,810 INFO L87 Difference]: Start difference. First operand 539 states and 588 transitions. Second operand has 6 states, 5 states have (on average 31.0) internal successors, (155), 6 states have internal predecessors, (155), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:51,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:51,418 INFO L93 Difference]: Finished difference Result 560 states and 591 transitions. [2023-11-26 11:45:51,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:45:51,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 31.0) internal successors, (155), 6 states have internal predecessors, (155), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 167 [2023-11-26 11:45:51,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:51,422 INFO L225 Difference]: With dead ends: 560 [2023-11-26 11:45:51,422 INFO L226 Difference]: Without dead ends: 557 [2023-11-26 11:45:51,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:45:51,423 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 123 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:51,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 125 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:45:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-26 11:45:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 539. [2023-11-26 11:45:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 500 states have (on average 1.13) internal successors, (565), 524 states have internal predecessors, (565), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:45:51,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 585 transitions. [2023-11-26 11:45:51,447 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 585 transitions. Word has length 167 [2023-11-26 11:45:51,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:51,447 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 585 transitions. [2023-11-26 11:45:51,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 31.0) internal successors, (155), 6 states have internal predecessors, (155), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:45:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 585 transitions. [2023-11-26 11:45:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-26 11:45:51,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:51,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-26 11:45:51,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:51,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:51,661 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:51,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:51,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1025873583, now seen corresponding path program 1 times [2023-11-26 11:45:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:51,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744957339] [2023-11-26 11:45:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:51,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:51,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:51,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818296173] [2023-11-26 11:45:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:51,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:51,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:51,677 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:51,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 11:45:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:51,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:45:51,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:52,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:52,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:52,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744957339] [2023-11-26 11:45:52,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:52,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818296173] [2023-11-26 11:45:52,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818296173] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:52,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:52,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-26 11:45:52,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652243738] [2023-11-26 11:45:52,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:52,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:45:52,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:45:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:45:52,733 INFO L87 Difference]: Start difference. First operand 539 states and 585 transitions. Second operand has 10 states, 9 states have (on average 34.333333333333336) internal successors, (309), 10 states have internal predecessors, (309), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:45:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:53,643 INFO L93 Difference]: Finished difference Result 553 states and 588 transitions. [2023-11-26 11:45:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:45:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 34.333333333333336) internal successors, (309), 10 states have internal predecessors, (309), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 169 [2023-11-26 11:45:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:53,647 INFO L225 Difference]: With dead ends: 553 [2023-11-26 11:45:53,647 INFO L226 Difference]: Without dead ends: 539 [2023-11-26 11:45:53,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:45:53,649 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 420 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:53,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 284 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 11:45:53,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-11-26 11:45:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 529. [2023-11-26 11:45:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 500 states have (on average 1.06) internal successors, (530), 514 states have internal predecessors, (530), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:45:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 550 transitions. [2023-11-26 11:45:53,679 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 550 transitions. Word has length 169 [2023-11-26 11:45:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:53,680 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 550 transitions. [2023-11-26 11:45:53,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 34.333333333333336) internal successors, (309), 10 states have internal predecessors, (309), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:45:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 550 transitions. [2023-11-26 11:45:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-26 11:45:53,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:53,683 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2023-11-26 11:45:53,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:53,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:53,891 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-26 11:45:53,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:53,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1977969587, now seen corresponding path program 1 times [2023-11-26 11:45:53,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:53,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608502326] [2023-11-26 11:45:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:53,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:53,907 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:53,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339792025] [2023-11-26 11:45:53,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:53,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:53,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:53,909 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:53,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2818eb-ba3d-4206-af96-504ecd03c02c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 11:45:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:54,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 11:45:54,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 11:45:54,432 INFO L327 TraceCheckSpWp]: Computing backward predicates...