./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/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_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/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_84c81dcf-ea35-43fb-b92f-0807f610fa46/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 ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:51:57,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:51:57,856 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:51:57,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:51:57,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:51:57,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:51:57,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:51:57,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:51:57,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:51:57,889 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:51:57,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:51:57,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:51:57,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:51:57,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:51:57,893 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:51:57,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:51:57,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:51:57,895 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:51:57,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:51:57,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:51:57,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:51:57,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:51:57,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:51:57,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:51:57,899 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:51:57,900 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:51:57,900 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:51:57,901 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:51:57,902 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:51:57,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:51:57,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:51:57,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:51:57,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:51:57,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:57,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:51:57,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:51:57,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:51:57,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:51:57,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:51:57,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:51:57,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:51:57,907 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:51:57,907 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:51:57,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:51:57,908 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_84c81dcf-ea35-43fb-b92f-0807f610fa46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 [2023-11-26 11:51:58,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:51:58,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:51:58,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:51:58,282 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:51:58,282 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:51:58,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2023-11-26 11:52:01,494 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:52:01,761 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:52:01,762 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2023-11-26 11:52:01,771 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/data/1088d3abc/72398f77e5644434a65d96e6a074b40b/FLAG5a28b179b [2023-11-26 11:52:01,784 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/data/1088d3abc/72398f77e5644434a65d96e6a074b40b [2023-11-26 11:52:01,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:52:01,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:52:01,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:01,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:52:01,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:52:01,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:01" (1/1) ... [2023-11-26 11:52:01,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9136c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:01, skipping insertion in model container [2023-11-26 11:52:01,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:01" (1/1) ... [2023-11-26 11:52:01,823 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:52:02,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:02,042 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:52:02,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:02,093 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:52:02,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02 WrapperNode [2023-11-26 11:52:02,094 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:02,095 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:02,096 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:52:02,096 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:52:02,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,148 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 149 [2023-11-26 11:52:02,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:02,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:52:02,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:52:02,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:52:02,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,165 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,181 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 11:52:02,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,209 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:52:02,213 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:52:02,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:52:02,214 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:52:02,215 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (1/1) ... [2023-11-26 11:52:02,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:02,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:02,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:52:02,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:52:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:52:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:52:02,314 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:52:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:52:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:52:02,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:52:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:52:02,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:52:02,439 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:52:02,443 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:52:03,196 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:52:03,257 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:52:03,257 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:52:03,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:03 BoogieIcfgContainer [2023-11-26 11:52:03,258 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:52:03,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:52:03,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:52:03,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:52:03,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:52:01" (1/3) ... [2023-11-26 11:52:03,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a2d1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:03, skipping insertion in model container [2023-11-26 11:52:03,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:02" (2/3) ... [2023-11-26 11:52:03,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a2d1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:03, skipping insertion in model container [2023-11-26 11:52:03,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:03" (3/3) ... [2023-11-26 11:52:03,267 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2023-11-26 11:52:03,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:52:03,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2023-11-26 11:52:03,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:52:03,365 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;@48159cb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:52:03,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-11-26 11:52:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 79 states have (on average 1.9113924050632911) internal successors, (151), 144 states have internal predecessors, (151), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:52:03,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-26 11:52:03,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:03,379 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:03,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:03,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:03,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1634057786, now seen corresponding path program 1 times [2023-11-26 11:52:03,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:03,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782202471] [2023-11-26 11:52:03,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:03,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:03,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782202471] [2023-11-26 11:52:03,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:52:03,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198425946] [2023-11-26 11:52:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:03,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:03,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:03,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:03,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:52:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:03,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:52:03,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 11:52:03,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:03,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198425946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:03,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:03,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887243303] [2023-11-26 11:52:03,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:03,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:52:03,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:52:03,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:52:03,747 INFO L87 Difference]: Start difference. First operand has 158 states, 79 states have (on average 1.9113924050632911) internal successors, (151), 144 states have internal predecessors, (151), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:52:03,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:03,796 INFO L93 Difference]: Finished difference Result 313 states and 359 transitions. [2023-11-26 11:52:03,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:52:03,799 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-11-26 11:52:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:03,821 INFO L225 Difference]: With dead ends: 313 [2023-11-26 11:52:03,822 INFO L226 Difference]: Without dead ends: 154 [2023-11-26 11:52:03,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 11:52:03,830 INFO L413 NwaCegarLoop]: 166 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, 166 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 11:52:03,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:03,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-26 11:52:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-26 11:52:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 78 states have (on average 1.8205128205128205) internal successors, (142), 141 states have internal predecessors, (142), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-26 11:52:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2023-11-26 11:52:03,893 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 24 [2023-11-26 11:52:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:03,893 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2023-11-26 11:52:03,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:52:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2023-11-26 11:52:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-26 11:52:03,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:03,896 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:03,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:52:04,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:52:04,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:04,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash 385715966, now seen corresponding path program 1 times [2023-11-26 11:52:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:04,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833105107] [2023-11-26 11:52:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:04,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:04,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628410893] [2023-11-26 11:52:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:04,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:04,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:04,151 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:04,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:52:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:04,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:52:04,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:52:04,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:04,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:04,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833105107] [2023-11-26 11:52:04,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:04,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628410893] [2023-11-26 11:52:04,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628410893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:04,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:04,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:52:04,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018558190] [2023-11-26 11:52:04,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:04,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:52:04,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:04,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:52:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:52:04,417 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand has 7 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 11:52:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:04,734 INFO L93 Difference]: Finished difference Result 154 states and 164 transitions. [2023-11-26 11:52:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:52:04,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2023-11-26 11:52:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:04,737 INFO L225 Difference]: With dead ends: 154 [2023-11-26 11:52:04,737 INFO L226 Difference]: Without dead ends: 152 [2023-11-26 11:52:04,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:04,740 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 133 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:04,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 251 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:52:04,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-26 11:52:04,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-11-26 11:52:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 78 states have (on average 1.794871794871795) internal successors, (140), 139 states have internal predecessors, (140), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-26 11:52:04,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2023-11-26 11:52:04,761 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 24 [2023-11-26 11:52:04,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:04,763 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2023-11-26 11:52:04,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 11:52:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2023-11-26 11:52:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-26 11:52:04,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:04,769 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:04,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:04,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:04,970 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:04,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash -927706900, now seen corresponding path program 1 times [2023-11-26 11:52:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:04,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761326284] [2023-11-26 11:52:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:04,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:04,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813531586] [2023-11-26 11:52:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:04,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:04,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:04,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:05,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:52:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:05,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:52:05,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:52:05,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:05,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:05,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761326284] [2023-11-26 11:52:05,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:05,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813531586] [2023-11-26 11:52:05,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813531586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:05,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:05,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 11:52:05,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271617985] [2023-11-26 11:52:05,450 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:05,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:52:05,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:05,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:52:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:05,454 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 11:52:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:05,806 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2023-11-26 11:52:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:52:05,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2023-11-26 11:52:05,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:05,812 INFO L225 Difference]: With dead ends: 152 [2023-11-26 11:52:05,813 INFO L226 Difference]: Without dead ends: 151 [2023-11-26 11:52:05,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:52:05,819 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 260 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:05,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 235 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:52:05,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-26 11:52:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-26 11:52:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 138 states have internal predecessors, (139), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-26 11:52:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 161 transitions. [2023-11-26 11:52:05,861 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 161 transitions. Word has length 25 [2023-11-26 11:52:05,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:05,862 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 161 transitions. [2023-11-26 11:52:05,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 11:52:05,862 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 161 transitions. [2023-11-26 11:52:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-26 11:52:05,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:05,864 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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 11:52:05,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 11:52:06,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 11:52:06,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:06,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:06,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1810640804, now seen corresponding path program 1 times [2023-11-26 11:52:06,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:06,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108670584] [2023-11-26 11:52:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:06,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:06,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:06,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558866208] [2023-11-26 11:52:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:06,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:06,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:06,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:06,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:52:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:06,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:52:06,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:06,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:06,416 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:06,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:06,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108670584] [2023-11-26 11:52:06,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:06,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558866208] [2023-11-26 11:52:06,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558866208] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:06,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:06,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-26 11:52:06,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114378069] [2023-11-26 11:52:06,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:06,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:52:06,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:06,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:52:06,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:52:06,420 INFO L87 Difference]: Start difference. First operand 151 states and 161 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:52:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:06,699 INFO L93 Difference]: Finished difference Result 268 states and 284 transitions. [2023-11-26 11:52:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:06,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2023-11-26 11:52:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:06,702 INFO L225 Difference]: With dead ends: 268 [2023-11-26 11:52:06,702 INFO L226 Difference]: Without dead ends: 238 [2023-11-26 11:52:06,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:06,715 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 301 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:06,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 250 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:52:06,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-26 11:52:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 199. [2023-11-26 11:52:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 122 states have (on average 1.8278688524590163) internal successors, (223), 181 states have internal predecessors, (223), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:52:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 253 transitions. [2023-11-26 11:52:06,750 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 253 transitions. Word has length 40 [2023-11-26 11:52:06,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:06,752 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 253 transitions. [2023-11-26 11:52:06,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:52:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 253 transitions. [2023-11-26 11:52:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-26 11:52:06,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:06,757 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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 11:52:06,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:06,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:06,964 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:06,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:06,964 INFO L85 PathProgramCache]: Analyzing trace with hash 295288537, now seen corresponding path program 1 times [2023-11-26 11:52:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:06,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122140564] [2023-11-26 11:52:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:06,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:06,982 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:06,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242019126] [2023-11-26 11:52:06,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:06,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:06,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:06,984 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:07,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:52:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:07,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:52:07,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:07,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:07,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122140564] [2023-11-26 11:52:07,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:07,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242019126] [2023-11-26 11:52:07,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242019126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:07,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:07,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-26 11:52:07,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585518488] [2023-11-26 11:52:07,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:07,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:07,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:07,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:07,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:07,316 INFO L87 Difference]: Start difference. First operand 199 states and 253 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-26 11:52:07,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:07,903 INFO L93 Difference]: Finished difference Result 241 states and 257 transitions. [2023-11-26 11:52:07,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:07,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 41 [2023-11-26 11:52:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:07,906 INFO L225 Difference]: With dead ends: 241 [2023-11-26 11:52:07,906 INFO L226 Difference]: Without dead ends: 239 [2023-11-26 11:52:07,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:52:07,908 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 643 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:07,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 371 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:52:07,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-26 11:52:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 201. [2023-11-26 11:52:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 124 states have (on average 1.7983870967741935) internal successors, (223), 183 states have internal predecessors, (223), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:52:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 253 transitions. [2023-11-26 11:52:07,940 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 253 transitions. Word has length 41 [2023-11-26 11:52:07,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:07,941 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 253 transitions. [2023-11-26 11:52:07,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-26 11:52:07,941 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 253 transitions. [2023-11-26 11:52:07,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 11:52:07,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:07,943 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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 11:52:07,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:08,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:08,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:08,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:08,150 INFO L85 PathProgramCache]: Analyzing trace with hash 564010130, now seen corresponding path program 1 times [2023-11-26 11:52:08,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:08,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887482568] [2023-11-26 11:52:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:08,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:08,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:08,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328576467] [2023-11-26 11:52:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:08,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:08,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:08,171 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:08,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:52:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:08,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:52:08,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:08,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:08,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:08,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887482568] [2023-11-26 11:52:08,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:08,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328576467] [2023-11-26 11:52:08,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328576467] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:08,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:08,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 11:52:08,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193730201] [2023-11-26 11:52:08,404 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:08,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:52:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:52:08,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:08,407 INFO L87 Difference]: Start difference. First operand 201 states and 253 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:52:08,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:08,861 INFO L93 Difference]: Finished difference Result 322 states and 343 transitions. [2023-11-26 11:52:08,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:52:08,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2023-11-26 11:52:08,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:08,864 INFO L225 Difference]: With dead ends: 322 [2023-11-26 11:52:08,864 INFO L226 Difference]: Without dead ends: 320 [2023-11-26 11:52:08,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:52:08,866 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 479 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:08,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 349 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:52:08,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-26 11:52:08,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 247. [2023-11-26 11:52:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 166 states have (on average 1.8132530120481927) internal successors, (301), 225 states have internal predecessors, (301), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:52:08,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 339 transitions. [2023-11-26 11:52:08,887 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 339 transitions. Word has length 42 [2023-11-26 11:52:08,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:08,887 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 339 transitions. [2023-11-26 11:52:08,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:52:08,888 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 339 transitions. [2023-11-26 11:52:08,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 11:52:08,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:08,889 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 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 11:52:08,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:09,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:09,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:09,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:09,096 INFO L85 PathProgramCache]: Analyzing trace with hash 304444923, now seen corresponding path program 1 times [2023-11-26 11:52:09,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:09,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194543993] [2023-11-26 11:52:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:09,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:09,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:09,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625120090] [2023-11-26 11:52:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:09,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:09,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:09,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:09,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:52:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:09,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:52:09,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:09,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:09,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:09,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194543993] [2023-11-26 11:52:09,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:09,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625120090] [2023-11-26 11:52:09,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625120090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:09,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:09,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:52:09,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911849720] [2023-11-26 11:52:09,751 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:09,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:52:09,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:09,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:52:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:09,754 INFO L87 Difference]: Start difference. First operand 247 states and 339 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:52:10,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:10,364 INFO L93 Difference]: Finished difference Result 364 states and 385 transitions. [2023-11-26 11:52:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:52:10,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2023-11-26 11:52:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:10,368 INFO L225 Difference]: With dead ends: 364 [2023-11-26 11:52:10,369 INFO L226 Difference]: Without dead ends: 363 [2023-11-26 11:52:10,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:52:10,370 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 627 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:10,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 474 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:52:10,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-26 11:52:10,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 247. [2023-11-26 11:52:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 166 states have (on average 1.8072289156626506) internal successors, (300), 225 states have internal predecessors, (300), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:52:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 338 transitions. [2023-11-26 11:52:10,397 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 338 transitions. Word has length 43 [2023-11-26 11:52:10,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:10,398 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 338 transitions. [2023-11-26 11:52:10,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:52:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 338 transitions. [2023-11-26 11:52:10,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-26 11:52:10,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:10,406 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 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 11:52:10,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:10,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:10,612 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:10,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash 847858100, now seen corresponding path program 1 times [2023-11-26 11:52:10,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:10,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461378261] [2023-11-26 11:52:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:10,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:10,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:10,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819756418] [2023-11-26 11:52:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:10,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:10,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:10,652 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:10,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:52:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:10,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:52:10,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:52:10,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:11,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:11,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461378261] [2023-11-26 11:52:11,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:11,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819756418] [2023-11-26 11:52:11,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819756418] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:11,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:11,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:52:11,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254103481] [2023-11-26 11:52:11,037 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:11,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:52:11,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:11,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:52:11,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:11,040 INFO L87 Difference]: Start difference. First operand 247 states and 338 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:52:12,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:12,207 INFO L93 Difference]: Finished difference Result 320 states and 340 transitions. [2023-11-26 11:52:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:12,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2023-11-26 11:52:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:12,210 INFO L225 Difference]: With dead ends: 320 [2023-11-26 11:52:12,210 INFO L226 Difference]: Without dead ends: 318 [2023-11-26 11:52:12,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:52:12,211 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 471 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:12,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 286 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 11:52:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-26 11:52:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 247. [2023-11-26 11:52:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 166 states have (on average 1.7951807228915662) internal successors, (298), 225 states have internal predecessors, (298), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:52:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 336 transitions. [2023-11-26 11:52:12,241 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 336 transitions. Word has length 44 [2023-11-26 11:52:12,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:12,242 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 336 transitions. [2023-11-26 11:52:12,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:52:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 336 transitions. [2023-11-26 11:52:12,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 11:52:12,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:12,243 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:12,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:12,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:12,450 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:12,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:12,450 INFO L85 PathProgramCache]: Analyzing trace with hash -251836423, now seen corresponding path program 1 times [2023-11-26 11:52:12,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:12,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349733949] [2023-11-26 11:52:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:12,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:12,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:12,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87906455] [2023-11-26 11:52:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:12,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:12,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:12,478 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:12,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:52:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:12,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:52:12,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:52:12,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:12,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:12,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349733949] [2023-11-26 11:52:12,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:12,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87906455] [2023-11-26 11:52:12,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87906455] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:12,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:12,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-11-26 11:52:12,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897584219] [2023-11-26 11:52:12,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:12,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:12,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:12,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:12,868 INFO L87 Difference]: Start difference. First operand 247 states and 336 transitions. Second operand has 10 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 11:52:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:13,404 INFO L93 Difference]: Finished difference Result 300 states and 355 transitions. [2023-11-26 11:52:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:13,405 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 50 [2023-11-26 11:52:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:13,407 INFO L225 Difference]: With dead ends: 300 [2023-11-26 11:52:13,407 INFO L226 Difference]: Without dead ends: 299 [2023-11-26 11:52:13,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:52:13,408 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 585 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:13,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 498 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:52:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-26 11:52:13,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 252. [2023-11-26 11:52:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 170 states have (on average 1.7823529411764707) internal successors, (303), 229 states have internal predecessors, (303), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:52:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 343 transitions. [2023-11-26 11:52:13,426 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 343 transitions. Word has length 50 [2023-11-26 11:52:13,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:13,427 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 343 transitions. [2023-11-26 11:52:13,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 11:52:13,427 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 343 transitions. [2023-11-26 11:52:13,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 11:52:13,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:13,428 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:13,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:13,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:13,634 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:13,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash 783005563, now seen corresponding path program 1 times [2023-11-26 11:52:13,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:13,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787379418] [2023-11-26 11:52:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:13,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:13,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:13,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413883727] [2023-11-26 11:52:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:13,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:13,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:13,648 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:13,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:52:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:13,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:52:13,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:52:13,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:14,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:14,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787379418] [2023-11-26 11:52:14,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:14,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413883727] [2023-11-26 11:52:14,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413883727] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:14,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:14,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-11-26 11:52:14,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273970367] [2023-11-26 11:52:14,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:14,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:14,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:14,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:14,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:14,068 INFO L87 Difference]: Start difference. First operand 252 states and 343 transitions. Second operand has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 11:52:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:14,396 INFO L93 Difference]: Finished difference Result 301 states and 354 transitions. [2023-11-26 11:52:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:14,397 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 51 [2023-11-26 11:52:14,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:14,399 INFO L225 Difference]: With dead ends: 301 [2023-11-26 11:52:14,399 INFO L226 Difference]: Without dead ends: 300 [2023-11-26 11:52:14,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:52:14,400 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 417 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:14,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 435 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:52:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-26 11:52:14,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 253. [2023-11-26 11:52:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 171 states have (on average 1.7660818713450293) internal successors, (302), 230 states have internal predecessors, (302), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:52:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 342 transitions. [2023-11-26 11:52:14,436 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 342 transitions. Word has length 51 [2023-11-26 11:52:14,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:14,437 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 342 transitions. [2023-11-26 11:52:14,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 11:52:14,437 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 342 transitions. [2023-11-26 11:52:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 11:52:14,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:14,438 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:14,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:14,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:52:14,644 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:14,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:14,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1496631237, now seen corresponding path program 1 times [2023-11-26 11:52:14,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:14,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316649627] [2023-11-26 11:52:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:14,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:14,656 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:14,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255189845] [2023-11-26 11:52:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:14,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:14,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:14,658 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:14,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:52:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:14,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:52:14,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:14,804 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:14,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:14,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:14,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316649627] [2023-11-26 11:52:14,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:14,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255189845] [2023-11-26 11:52:14,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255189845] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:14,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:14,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:52:14,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608415321] [2023-11-26 11:52:14,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:14,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:52:14,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:14,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:52:14,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:14,968 INFO L87 Difference]: Start difference. First operand 253 states and 342 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-26 11:52:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:16,718 INFO L93 Difference]: Finished difference Result 293 states and 345 transitions. [2023-11-26 11:52:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:16,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 52 [2023-11-26 11:52:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:16,721 INFO L225 Difference]: With dead ends: 293 [2023-11-26 11:52:16,721 INFO L226 Difference]: Without dead ends: 292 [2023-11-26 11:52:16,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:16,722 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 478 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:16,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 342 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 11:52:16,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-26 11:52:16,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 254. [2023-11-26 11:52:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 172 states have (on average 1.75) internal successors, (301), 231 states have internal predecessors, (301), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:52:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 341 transitions. [2023-11-26 11:52:16,741 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 341 transitions. Word has length 52 [2023-11-26 11:52:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:16,741 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 341 transitions. [2023-11-26 11:52:16,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-26 11:52:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 341 transitions. [2023-11-26 11:52:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 11:52:16,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:16,742 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:16,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:16,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:52:16,948 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:16,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:16,949 INFO L85 PathProgramCache]: Analyzing trace with hash 849071997, now seen corresponding path program 1 times [2023-11-26 11:52:16,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:16,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132044231] [2023-11-26 11:52:16,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:16,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:16,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:16,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075128514] [2023-11-26 11:52:16,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:16,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:16,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:16,961 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:16,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:52:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:17,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:52:17,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:17,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:17,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:17,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132044231] [2023-11-26 11:52:17,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:17,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075128514] [2023-11-26 11:52:17,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075128514] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:17,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:17,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:52:17,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837902316] [2023-11-26 11:52:17,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:17,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:52:17,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:17,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:52:17,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:17,413 INFO L87 Difference]: Start difference. First operand 254 states and 341 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-26 11:52:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:17,735 INFO L93 Difference]: Finished difference Result 293 states and 344 transitions. [2023-11-26 11:52:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:17,736 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 53 [2023-11-26 11:52:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:17,738 INFO L225 Difference]: With dead ends: 293 [2023-11-26 11:52:17,738 INFO L226 Difference]: Without dead ends: 292 [2023-11-26 11:52:17,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:17,740 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 533 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:17,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 437 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:52:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-26 11:52:17,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 255. [2023-11-26 11:52:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.7341040462427746) internal successors, (300), 232 states have internal predecessors, (300), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:52:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 340 transitions. [2023-11-26 11:52:17,758 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 340 transitions. Word has length 53 [2023-11-26 11:52:17,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:17,759 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 340 transitions. [2023-11-26 11:52:17,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-26 11:52:17,759 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 340 transitions. [2023-11-26 11:52:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-26 11:52:17,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:17,760 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:17,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:17,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:17,973 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:17,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash 551428221, now seen corresponding path program 1 times [2023-11-26 11:52:17,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:17,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242563490] [2023-11-26 11:52:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:17,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:17,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:17,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315711677] [2023-11-26 11:52:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:17,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:17,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:17,986 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:17,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:52:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:52:18,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:52:18,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:18,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:18,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242563490] [2023-11-26 11:52:18,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:18,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315711677] [2023-11-26 11:52:18,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315711677] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:18,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:18,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 11:52:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891364184] [2023-11-26 11:52:18,253 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:18,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:52:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:18,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:52:18,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:52:18,255 INFO L87 Difference]: Start difference. First operand 255 states and 340 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:52:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:18,558 INFO L93 Difference]: Finished difference Result 289 states and 341 transitions. [2023-11-26 11:52:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:18,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 54 [2023-11-26 11:52:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:18,562 INFO L225 Difference]: With dead ends: 289 [2023-11-26 11:52:18,563 INFO L226 Difference]: Without dead ends: 288 [2023-11-26 11:52:18,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:18,564 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 261 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:18,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 354 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:52:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-26 11:52:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 255. [2023-11-26 11:52:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.722543352601156) internal successors, (298), 232 states have internal predecessors, (298), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:52:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 338 transitions. [2023-11-26 11:52:18,582 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 338 transitions. Word has length 54 [2023-11-26 11:52:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:18,582 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 338 transitions. [2023-11-26 11:52:18,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:52:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 338 transitions. [2023-11-26 11:52:18,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 11:52:18,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:18,584 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:18,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:18,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:18,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:18,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash -85594241, now seen corresponding path program 1 times [2023-11-26 11:52:18,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:18,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972983306] [2023-11-26 11:52:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:18,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:18,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467488734] [2023-11-26 11:52:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:18,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:18,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:18,803 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:18,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:52:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:52:18,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:52:19,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:19,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:19,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972983306] [2023-11-26 11:52:19,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:19,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467488734] [2023-11-26 11:52:19,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467488734] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:19,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:19,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:52:19,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293668061] [2023-11-26 11:52:19,547 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:19,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:52:19,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:19,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:52:19,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:19,549 INFO L87 Difference]: Start difference. First operand 255 states and 338 transitions. Second operand has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:52:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:20,105 INFO L93 Difference]: Finished difference Result 296 states and 347 transitions. [2023-11-26 11:52:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:20,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2023-11-26 11:52:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:20,108 INFO L225 Difference]: With dead ends: 296 [2023-11-26 11:52:20,109 INFO L226 Difference]: Without dead ends: 295 [2023-11-26 11:52:20,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:20,110 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 404 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:20,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 400 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:52:20,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-26 11:52:20,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 255. [2023-11-26 11:52:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.7109826589595376) internal successors, (296), 232 states have internal predecessors, (296), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:52:20,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 336 transitions. [2023-11-26 11:52:20,131 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 336 transitions. Word has length 55 [2023-11-26 11:52:20,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:20,132 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 336 transitions. [2023-11-26 11:52:20,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:52:20,132 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 336 transitions. [2023-11-26 11:52:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:52:20,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:20,133 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-26 11:52:20,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-26 11:52:20,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 11:52:20,339 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:20,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:20,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1585765133, now seen corresponding path program 1 times [2023-11-26 11:52:20,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:20,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832240427] [2023-11-26 11:52:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:20,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:20,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:20,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786226656] [2023-11-26 11:52:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:20,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:20,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:20,353 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:20,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:52:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:20,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:52:20,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:52:20,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:20,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:20,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832240427] [2023-11-26 11:52:20,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:20,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786226656] [2023-11-26 11:52:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786226656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:20,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 11:52:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020669881] [2023-11-26 11:52:20,824 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:20,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:52:20,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:52:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:20,826 INFO L87 Difference]: Start difference. First operand 255 states and 336 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:52:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:21,539 INFO L93 Difference]: Finished difference Result 293 states and 345 transitions. [2023-11-26 11:52:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:52:21,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2023-11-26 11:52:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:21,542 INFO L225 Difference]: With dead ends: 293 [2023-11-26 11:52:21,543 INFO L226 Difference]: Without dead ends: 291 [2023-11-26 11:52:21,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:21,544 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 391 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:21,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 306 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:52:21,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-26 11:52:21,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 255. [2023-11-26 11:52:21,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.6878612716763006) internal successors, (292), 232 states have internal predecessors, (292), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:52:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 332 transitions. [2023-11-26 11:52:21,566 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 332 transitions. Word has length 61 [2023-11-26 11:52:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:21,566 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 332 transitions. [2023-11-26 11:52:21,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:52:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 332 transitions. [2023-11-26 11:52:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:52:21,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:21,568 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-26 11:52:21,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:21,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 11:52:21,774 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:21,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1914078964, now seen corresponding path program 1 times [2023-11-26 11:52:21,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533960103] [2023-11-26 11:52:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:21,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:21,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988334892] [2023-11-26 11:52:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:21,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:21,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:21,789 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:21,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 11:52:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:21,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:52:21,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:52:22,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:22,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:22,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533960103] [2023-11-26 11:52:22,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:22,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988334892] [2023-11-26 11:52:22,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988334892] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:22,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:22,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 11:52:22,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073445777] [2023-11-26 11:52:22,251 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:22,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:52:22,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:22,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:52:22,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:22,253 INFO L87 Difference]: Start difference. First operand 255 states and 332 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:52:23,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:23,014 INFO L93 Difference]: Finished difference Result 293 states and 341 transitions. [2023-11-26 11:52:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:52:23,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 62 [2023-11-26 11:52:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:23,017 INFO L225 Difference]: With dead ends: 293 [2023-11-26 11:52:23,018 INFO L226 Difference]: Without dead ends: 291 [2023-11-26 11:52:23,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:23,019 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 192 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:23,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 344 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:52:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-26 11:52:23,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 255. [2023-11-26 11:52:23,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.6647398843930636) internal successors, (288), 232 states have internal predecessors, (288), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:52:23,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 328 transitions. [2023-11-26 11:52:23,039 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 328 transitions. Word has length 62 [2023-11-26 11:52:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:23,039 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 328 transitions. [2023-11-26 11:52:23,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:52:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 328 transitions. [2023-11-26 11:52:23,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-26 11:52:23,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:23,041 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-26 11:52:23,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:23,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:23,247 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:23,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash -793094161, now seen corresponding path program 1 times [2023-11-26 11:52:23,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:23,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656542404] [2023-11-26 11:52:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:23,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:23,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:23,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396896649] [2023-11-26 11:52:23,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:23,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:23,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:23,260 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:23,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 11:52:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:23,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:52:23,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 11:52:23,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 11:52:23,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:23,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656542404] [2023-11-26 11:52:23,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:23,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396896649] [2023-11-26 11:52:23,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396896649] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:23,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:23,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:52:23,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990471660] [2023-11-26 11:52:23,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:23,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:52:23,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:23,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:52:23,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:23,657 INFO L87 Difference]: Start difference. First operand 255 states and 328 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 11:52:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:25,844 INFO L93 Difference]: Finished difference Result 311 states and 357 transitions. [2023-11-26 11:52:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:25,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 63 [2023-11-26 11:52:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:25,846 INFO L225 Difference]: With dead ends: 311 [2023-11-26 11:52:25,846 INFO L226 Difference]: Without dead ends: 309 [2023-11-26 11:52:25,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:25,847 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 421 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:25,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 427 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-26 11:52:25,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-26 11:52:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 260. [2023-11-26 11:52:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 178 states have (on average 1.6404494382022472) internal successors, (292), 236 states have internal predecessors, (292), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:52:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2023-11-26 11:52:25,867 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 63 [2023-11-26 11:52:25,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:25,867 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2023-11-26 11:52:25,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 11:52:25,868 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2023-11-26 11:52:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:52:25,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:25,869 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-26 11:52:25,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-26 11:52:26,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:26,075 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:26,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1183884886, now seen corresponding path program 1 times [2023-11-26 11:52:26,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:26,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778163710] [2023-11-26 11:52:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:26,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:26,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:26,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594634076] [2023-11-26 11:52:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:26,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:26,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:26,087 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:26,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 11:52:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:26,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:52:26,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 11:52:26,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 11:52:26,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778163710] [2023-11-26 11:52:26,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594634076] [2023-11-26 11:52:26,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594634076] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:26,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:26,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:52:26,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297672925] [2023-11-26 11:52:26,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:26,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:52:26,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:26,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:52:26,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:26,501 INFO L87 Difference]: Start difference. First operand 260 states and 334 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-26 11:52:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:26,926 INFO L93 Difference]: Finished difference Result 309 states and 353 transitions. [2023-11-26 11:52:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:26,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 64 [2023-11-26 11:52:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:26,929 INFO L225 Difference]: With dead ends: 309 [2023-11-26 11:52:26,930 INFO L226 Difference]: Without dead ends: 307 [2023-11-26 11:52:26,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:26,931 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 354 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:26,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 287 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:52:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-26 11:52:26,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 260. [2023-11-26 11:52:26,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 179 states have (on average 1.6089385474860336) internal successors, (288), 236 states have internal predecessors, (288), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:52:26,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 330 transitions. [2023-11-26 11:52:26,961 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 330 transitions. Word has length 64 [2023-11-26 11:52:26,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:26,961 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 330 transitions. [2023-11-26 11:52:26,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-26 11:52:26,962 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 330 transitions. [2023-11-26 11:52:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 11:52:26,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:26,963 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-26 11:52:26,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:27,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:52:27,170 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:27,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:27,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1954274095, now seen corresponding path program 1 times [2023-11-26 11:52:27,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:27,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340152396] [2023-11-26 11:52:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:27,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:27,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:27,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936412934] [2023-11-26 11:52:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:27,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:27,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:27,183 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:27,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 11:52:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:27,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 11:52:27,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 11:52:27,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:36,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:36,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340152396] [2023-11-26 11:52:36,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:36,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936412934] [2023-11-26 11:52:36,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936412934] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:36,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:36,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:52:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168905219] [2023-11-26 11:52:36,049 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:36,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:52:36,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:36,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:52:36,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=76, Unknown=2, NotChecked=0, Total=110 [2023-11-26 11:52:36,051 INFO L87 Difference]: Start difference. First operand 260 states and 330 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:52:38,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:38,163 INFO L93 Difference]: Finished difference Result 292 states and 339 transitions. [2023-11-26 11:52:38,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:38,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 65 [2023-11-26 11:52:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:38,167 INFO L225 Difference]: With dead ends: 292 [2023-11-26 11:52:38,167 INFO L226 Difference]: Without dead ends: 291 [2023-11-26 11:52:38,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=36, Invalid=94, Unknown=2, NotChecked=0, Total=132 [2023-11-26 11:52:38,168 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 243 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:38,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 211 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-26 11:52:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-26 11:52:38,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 260. [2023-11-26 11:52:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 179 states have (on average 1.5977653631284916) internal successors, (286), 236 states have internal predecessors, (286), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:52:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 328 transitions. [2023-11-26 11:52:38,191 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 328 transitions. Word has length 65 [2023-11-26 11:52:38,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:38,192 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 328 transitions. [2023-11-26 11:52:38,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:52:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 328 transitions. [2023-11-26 11:52:38,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 11:52:38,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:38,193 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-26 11:52:38,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-26 11:52:38,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:38,401 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:38,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash -452954696, now seen corresponding path program 1 times [2023-11-26 11:52:38,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:38,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694040185] [2023-11-26 11:52:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:38,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:38,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:38,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395307218] [2023-11-26 11:52:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:38,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:38,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:38,424 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:38,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 11:52:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:38,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:52:38,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:52:38,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:39,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:39,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694040185] [2023-11-26 11:52:39,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:39,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395307218] [2023-11-26 11:52:39,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395307218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:39,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:39,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:52:39,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789124305] [2023-11-26 11:52:39,258 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:39,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:52:39,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:39,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:52:39,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:39,259 INFO L87 Difference]: Start difference. First operand 260 states and 328 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:52:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:40,310 INFO L93 Difference]: Finished difference Result 291 states and 337 transitions. [2023-11-26 11:52:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:40,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 66 [2023-11-26 11:52:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:40,313 INFO L225 Difference]: With dead ends: 291 [2023-11-26 11:52:40,313 INFO L226 Difference]: Without dead ends: 290 [2023-11-26 11:52:40,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:40,314 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 372 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:40,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 325 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 11:52:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-26 11:52:40,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 260. [2023-11-26 11:52:40,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 179 states have (on average 1.5865921787709498) internal successors, (284), 236 states have internal predecessors, (284), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:52:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 326 transitions. [2023-11-26 11:52:40,334 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 326 transitions. Word has length 66 [2023-11-26 11:52:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:40,335 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 326 transitions. [2023-11-26 11:52:40,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:52:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 326 transitions. [2023-11-26 11:52:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 11:52:40,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:40,336 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:40,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:40,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:40,544 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:40,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:40,545 INFO L85 PathProgramCache]: Analyzing trace with hash 449823759, now seen corresponding path program 1 times [2023-11-26 11:52:40,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:40,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890461597] [2023-11-26 11:52:40,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:40,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:40,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:40,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435110591] [2023-11-26 11:52:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:40,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:40,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:40,554 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:40,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 11:52:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:40,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:52:40,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 11:52:40,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:40,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:40,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890461597] [2023-11-26 11:52:40,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435110591] [2023-11-26 11:52:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435110591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:40,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:40,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:40,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190012747] [2023-11-26 11:52:40,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:40,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:40,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:40,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:40,687 INFO L87 Difference]: Start difference. First operand 260 states and 326 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 11:52:41,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:41,579 INFO L93 Difference]: Finished difference Result 290 states and 335 transitions. [2023-11-26 11:52:41,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:41,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2023-11-26 11:52:41,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:41,581 INFO L225 Difference]: With dead ends: 290 [2023-11-26 11:52:41,581 INFO L226 Difference]: Without dead ends: 286 [2023-11-26 11:52:41,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 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 11:52:41,582 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 51 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:41,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 223 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:52:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-26 11:52:41,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 263. [2023-11-26 11:52:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 182 states have (on average 1.554945054945055) internal successors, (283), 239 states have internal predecessors, (283), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:52:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 325 transitions. [2023-11-26 11:52:41,602 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 325 transitions. Word has length 72 [2023-11-26 11:52:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:41,602 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 325 transitions. [2023-11-26 11:52:41,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 11:52:41,602 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 325 transitions. [2023-11-26 11:52:41,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-26 11:52:41,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:41,603 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:41,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:41,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:41,804 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:41,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:41,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1511060975, now seen corresponding path program 1 times [2023-11-26 11:52:41,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:41,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088264137] [2023-11-26 11:52:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:41,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:41,813 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:41,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470670733] [2023-11-26 11:52:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:41,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:41,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:41,815 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:41,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 11:52:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:41,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:52:41,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 11:52:42,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:42,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:42,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088264137] [2023-11-26 11:52:42,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:42,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470670733] [2023-11-26 11:52:42,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470670733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:42,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:42,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:42,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371352767] [2023-11-26 11:52:42,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:42,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:42,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:42,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:42,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:42,047 INFO L87 Difference]: Start difference. First operand 263 states and 325 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 11:52:42,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:42,193 INFO L93 Difference]: Finished difference Result 294 states and 337 transitions. [2023-11-26 11:52:42,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:42,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 74 [2023-11-26 11:52:42,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:42,196 INFO L225 Difference]: With dead ends: 294 [2023-11-26 11:52:42,196 INFO L226 Difference]: Without dead ends: 293 [2023-11-26 11:52:42,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 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 11:52:42,197 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 112 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:42,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 223 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:42,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-26 11:52:42,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 263. [2023-11-26 11:52:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 182 states have (on average 1.543956043956044) internal successors, (281), 239 states have internal predecessors, (281), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:52:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 323 transitions. [2023-11-26 11:52:42,220 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 323 transitions. Word has length 74 [2023-11-26 11:52:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:42,220 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 323 transitions. [2023-11-26 11:52:42,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 11:52:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 323 transitions. [2023-11-26 11:52:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 11:52:42,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:42,222 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:42,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:42,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:42,429 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:42,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash 401750145, now seen corresponding path program 1 times [2023-11-26 11:52:42,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:42,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964716874] [2023-11-26 11:52:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:42,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:42,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:42,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316595456] [2023-11-26 11:52:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:42,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:42,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:42,440 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:42,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-26 11:52:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:42,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:52:42,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 11:52:42,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:42,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:42,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964716874] [2023-11-26 11:52:42,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:42,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316595456] [2023-11-26 11:52:42,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316595456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:42,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:42,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:52:42,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734863880] [2023-11-26 11:52:42,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:42,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:52:42,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:42,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:52:42,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:52:42,627 INFO L87 Difference]: Start difference. First operand 263 states and 323 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-26 11:52:42,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:42,881 INFO L93 Difference]: Finished difference Result 293 states and 335 transitions. [2023-11-26 11:52:42,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:42,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2023-11-26 11:52:42,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:42,889 INFO L225 Difference]: With dead ends: 293 [2023-11-26 11:52:42,889 INFO L226 Difference]: Without dead ends: 292 [2023-11-26 11:52:42,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:52:42,890 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 110 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:42,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 430 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:52:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-26 11:52:42,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 263. [2023-11-26 11:52:42,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 182 states have (on average 1.532967032967033) internal successors, (279), 239 states have internal predecessors, (279), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:52:42,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 321 transitions. [2023-11-26 11:52:42,921 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 321 transitions. Word has length 75 [2023-11-26 11:52:42,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:42,922 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 321 transitions. [2023-11-26 11:52:42,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-26 11:52:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 321 transitions. [2023-11-26 11:52:42,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-26 11:52:42,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:42,924 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:42,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:43,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:43,130 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:43,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:43,134 INFO L85 PathProgramCache]: Analyzing trace with hash -430647277, now seen corresponding path program 1 times [2023-11-26 11:52:43,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:43,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775235741] [2023-11-26 11:52:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:43,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:43,148 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:43,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319091954] [2023-11-26 11:52:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:43,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:43,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:43,151 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:43,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-26 11:52:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:43,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:52:43,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 11:52:43,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:43,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:43,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775235741] [2023-11-26 11:52:43,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:43,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319091954] [2023-11-26 11:52:43,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319091954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:43,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:43,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:43,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23692167] [2023-11-26 11:52:43,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:43,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:43,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:43,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:43,283 INFO L87 Difference]: Start difference. First operand 263 states and 321 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 11:52:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:43,950 INFO L93 Difference]: Finished difference Result 284 states and 325 transitions. [2023-11-26 11:52:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:43,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2023-11-26 11:52:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:43,953 INFO L225 Difference]: With dead ends: 284 [2023-11-26 11:52:43,953 INFO L226 Difference]: Without dead ends: 282 [2023-11-26 11:52:43,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 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 11:52:43,954 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 105 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:43,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 258 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:52:43,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-26 11:52:43,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 263. [2023-11-26 11:52:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 182 states have (on average 1.510989010989011) internal successors, (275), 239 states have internal predecessors, (275), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:52:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 317 transitions. [2023-11-26 11:52:43,977 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 317 transitions. Word has length 76 [2023-11-26 11:52:43,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:43,977 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 317 transitions. [2023-11-26 11:52:43,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 11:52:43,978 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 317 transitions. [2023-11-26 11:52:43,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 11:52:43,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:43,979 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:43,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:44,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-26 11:52:44,185 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:44,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:44,185 INFO L85 PathProgramCache]: Analyzing trace with hash -465163581, now seen corresponding path program 1 times [2023-11-26 11:52:44,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:44,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149381094] [2023-11-26 11:52:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:44,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:44,196 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:44,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375024567] [2023-11-26 11:52:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:44,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:44,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:44,198 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:44,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-26 11:52:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:52:44,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 11:52:44,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:44,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:44,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149381094] [2023-11-26 11:52:44,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:44,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375024567] [2023-11-26 11:52:44,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375024567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:44,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:44,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:44,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87832057] [2023-11-26 11:52:44,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:44,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:44,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:44,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:44,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:44,446 INFO L87 Difference]: Start difference. First operand 263 states and 317 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 11:52:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:45,339 INFO L93 Difference]: Finished difference Result 282 states and 321 transitions. [2023-11-26 11:52:45,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:45,339 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), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2023-11-26 11:52:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:45,344 INFO L225 Difference]: With dead ends: 282 [2023-11-26 11:52:45,344 INFO L226 Difference]: Without dead ends: 280 [2023-11-26 11:52:45,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:45,350 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 100 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:45,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 259 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:52:45,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-26 11:52:45,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 263. [2023-11-26 11:52:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 182 states have (on average 1.489010989010989) internal successors, (271), 239 states have internal predecessors, (271), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:52:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 313 transitions. [2023-11-26 11:52:45,371 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 313 transitions. Word has length 77 [2023-11-26 11:52:45,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:45,372 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 313 transitions. [2023-11-26 11:52:45,372 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), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 11:52:45,372 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 313 transitions. [2023-11-26 11:52:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-26 11:52:45,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:45,373 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:45,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:45,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 11:52:45,573 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:45,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash -57355895, now seen corresponding path program 1 times [2023-11-26 11:52:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:45,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574065686] [2023-11-26 11:52:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:45,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:45,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:45,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705401103] [2023-11-26 11:52:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:45,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:45,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:45,585 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:45,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-26 11:52:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:45,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:52:45,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 11:52:46,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 11:52:46,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:46,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574065686] [2023-11-26 11:52:46,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:46,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705401103] [2023-11-26 11:52:46,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705401103] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:46,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:46,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-11-26 11:52:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406646399] [2023-11-26 11:52:46,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:46,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:46,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:46,320 INFO L87 Difference]: Start difference. First operand 263 states and 313 transitions. Second operand has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 6 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-26 11:52:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:46,916 INFO L93 Difference]: Finished difference Result 310 states and 343 transitions. [2023-11-26 11:52:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:52:46,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 6 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 83 [2023-11-26 11:52:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:46,919 INFO L225 Difference]: With dead ends: 310 [2023-11-26 11:52:46,919 INFO L226 Difference]: Without dead ends: 309 [2023-11-26 11:52:46,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:52:46,920 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 248 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:46,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 527 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:52:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-26 11:52:46,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 278. [2023-11-26 11:52:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 196 states have (on average 1.510204081632653) internal successors, (296), 253 states have internal predecessors, (296), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 11:52:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 340 transitions. [2023-11-26 11:52:46,942 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 340 transitions. Word has length 83 [2023-11-26 11:52:46,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:46,943 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 340 transitions. [2023-11-26 11:52:46,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 6 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-26 11:52:46,943 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 340 transitions. [2023-11-26 11:52:46,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-26 11:52:46,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:46,945 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:46,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:47,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 11:52:47,145 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:47,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:47,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1778032613, now seen corresponding path program 1 times [2023-11-26 11:52:47,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:47,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467123911] [2023-11-26 11:52:47,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:47,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:47,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:47,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390476447] [2023-11-26 11:52:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:47,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:47,166 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:47,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-26 11:52:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:47,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:52:47,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 11:52:47,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:47,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467123911] [2023-11-26 11:52:47,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390476447] [2023-11-26 11:52:47,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390476447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:47,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:47,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:47,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937617236] [2023-11-26 11:52:47,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:47,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:47,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:47,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:47,704 INFO L87 Difference]: Start difference. First operand 278 states and 340 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 11:52:48,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:48,899 INFO L93 Difference]: Finished difference Result 290 states and 340 transitions. [2023-11-26 11:52:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:48,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2023-11-26 11:52:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:48,901 INFO L225 Difference]: With dead ends: 290 [2023-11-26 11:52:48,901 INFO L226 Difference]: Without dead ends: 286 [2023-11-26 11:52:48,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 81 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 11:52:48,902 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 22 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:48,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 189 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:52:48,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-26 11:52:48,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 278. [2023-11-26 11:52:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 196 states have (on average 1.469387755102041) internal successors, (288), 253 states have internal predecessors, (288), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 11:52:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 332 transitions. [2023-11-26 11:52:48,928 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 332 transitions. Word has length 84 [2023-11-26 11:52:48,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:48,928 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 332 transitions. [2023-11-26 11:52:48,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 11:52:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 332 transitions. [2023-11-26 11:52:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-26 11:52:48,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:48,930 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:48,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:49,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 11:52:49,136 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:49,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:49,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1443943455, now seen corresponding path program 1 times [2023-11-26 11:52:49,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:49,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329501343] [2023-11-26 11:52:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:49,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:49,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:49,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266866894] [2023-11-26 11:52:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:49,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:49,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:49,156 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:49,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-26 11:52:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:49,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-26 11:52:49,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-26 11:52:50,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:50,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:50,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329501343] [2023-11-26 11:52:50,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:50,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266866894] [2023-11-26 11:52:50,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266866894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:50,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:50,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-26 11:52:50,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44160158] [2023-11-26 11:52:50,799 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:50,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:52:50,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:50,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:52:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:52:50,801 INFO L87 Difference]: Start difference. First operand 278 states and 332 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 4 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-26 11:52:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:52,276 INFO L93 Difference]: Finished difference Result 288 states and 334 transitions. [2023-11-26 11:52:52,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:52:52,276 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 4 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 88 [2023-11-26 11:52:52,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:52,278 INFO L225 Difference]: With dead ends: 288 [2023-11-26 11:52:52,278 INFO L226 Difference]: Without dead ends: 287 [2023-11-26 11:52:52,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:52:52,279 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 215 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:52,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 350 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:52:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-26 11:52:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 278. [2023-11-26 11:52:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 253 states have internal predecessors, (286), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 11:52:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 330 transitions. [2023-11-26 11:52:52,304 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 330 transitions. Word has length 88 [2023-11-26 11:52:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:52,305 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 330 transitions. [2023-11-26 11:52:52,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 4 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-26 11:52:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 330 transitions. [2023-11-26 11:52:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-26 11:52:52,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:52,307 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:52,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:52,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 11:52:52,513 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 11:52:52,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1812574287, now seen corresponding path program 1 times [2023-11-26 11:52:52,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:52,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525959610] [2023-11-26 11:52:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:52,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:52,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:52,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834996296] [2023-11-26 11:52:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:52,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:52,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:52,523 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:52,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c81dcf-ea35-43fb-b92f-0807f610fa46/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-26 11:52:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:52,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-26 11:52:52,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-26 11:52:56,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:57,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525959610] [2023-11-26 11:52:57,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834996296] [2023-11-26 11:52:57,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834996296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:57,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:57,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-26 11:52:57,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77095969] [2023-11-26 11:52:57,413 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:57,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:52:57,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:57,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:52:57,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:52:57,415 INFO L87 Difference]: Start difference. First operand 278 states and 330 transitions. Second operand has 11 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9)