./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/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_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/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_4ef9b3fb-0631-43e3-b425-3de0796d9c63/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 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:56,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:56,983 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:00:56,994 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:56,995 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:57,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:57,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:57,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:57,043 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:57,048 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:57,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:57,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:57,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:57,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:57,053 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:57,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:57,054 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:00:57,054 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:57,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:57,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:57,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:57,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:00:57,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:57,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:00:57,057 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:00:57,057 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:00:57,058 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:57,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:00:57,059 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:57,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:57,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:57,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:57,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:57,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:57,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:57,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:57,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:00:57,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:57,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:57,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:57,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:57,064 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:00:57,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:57,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:57,065 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_4ef9b3fb-0631-43e3-b425-3de0796d9c63/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 [2023-11-26 12:00:57,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:57,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:57,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:57,449 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:57,450 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:57,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound1.c [2023-11-26 12:01:00,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:01:00,805 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:01:00,806 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound1.c [2023-11-26 12:01:00,814 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/data/831942cb3/9c169518647d4c7d8a69ed77622313f6/FLAGb1dcd3405 [2023-11-26 12:01:00,829 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/data/831942cb3/9c169518647d4c7d8a69ed77622313f6 [2023-11-26 12:01:00,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:01:00,834 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:01:00,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:00,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:01:00,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:01:00,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:00" (1/1) ... [2023-11-26 12:01:00,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f9dd78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:00, skipping insertion in model container [2023-11-26 12:01:00,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:00" (1/1) ... [2023-11-26 12:01:00,867 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:01,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:01,121 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:01:01,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:01,169 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:01:01,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01 WrapperNode [2023-11-26 12:01:01,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:01,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:01,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:01:01,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:01:01,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,216 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-11-26 12:01:01,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:01,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:01:01,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:01:01,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:01:01,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,259 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 12:01:01,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:01:01,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:01:01,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:01:01,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:01:01,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (1/1) ... [2023-11-26 12:01:01,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:01,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:01,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:01:01,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:01:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:01:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:01:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:01:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:01:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:01:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:01:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 12:01:01,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 12:01:01,456 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:01:01,461 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:01:01,736 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:01:01,766 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:01:01,766 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:01:01,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:01 BoogieIcfgContainer [2023-11-26 12:01:01,767 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:01:01,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:01:01,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:01:01,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:01:01,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:01:00" (1/3) ... [2023-11-26 12:01:01,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fc92d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:01, skipping insertion in model container [2023-11-26 12:01:01,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:01" (2/3) ... [2023-11-26 12:01:01,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fc92d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:01, skipping insertion in model container [2023-11-26 12:01:01,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:01" (3/3) ... [2023-11-26 12:01:01,778 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound1.c [2023-11-26 12:01:01,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:01:01,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-26 12:01:01,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:01,895 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;@3503b07c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:01,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-26 12:01:01,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 32 states have (on average 1.8125) internal successors, (58), 52 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:01:01,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 12:01:01,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:01,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:01,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:01,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1455350132, now seen corresponding path program 1 times [2023-11-26 12:01:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:01,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602794404] [2023-11-26 12:01:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:01,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:02,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:02,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602794404] [2023-11-26 12:01:02,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 12:01:02,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442995820] [2023-11-26 12:01:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:02,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:02,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:02,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:02,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:01:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:02,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 12:01:02,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:01:02,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:02,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442995820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:02,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:02,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:02,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008658669] [2023-11-26 12:01:02,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:02,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:01:02,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:01:02,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:01:02,301 INFO L87 Difference]: Start difference. First operand has 59 states, 32 states have (on average 1.8125) internal successors, (58), 52 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:01:02,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:02,348 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2023-11-26 12:01:02,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:01:02,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-26 12:01:02,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:02,360 INFO L225 Difference]: With dead ends: 116 [2023-11-26 12:01:02,361 INFO L226 Difference]: Without dead ends: 56 [2023-11-26 12:01:02,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 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 12:01:02,369 INFO L413 NwaCegarLoop]: 60 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, 60 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 12:01:02,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:02,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-26 12:01:02,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-26 12:01:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 50 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 12:01:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-11-26 12:01:02,421 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 14 [2023-11-26 12:01:02,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:02,423 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-11-26 12:01:02,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:01:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-11-26 12:01:02,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 12:01:02,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:02,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:02,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:02,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 12:01:02,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:02,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1455350117, now seen corresponding path program 1 times [2023-11-26 12:01:02,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:02,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494946837] [2023-11-26 12:01:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:02,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:02,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:02,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405558029] [2023-11-26 12:01:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:02,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:02,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:02,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:02,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:01:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:02,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:01:02,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:03,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:03,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:03,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494946837] [2023-11-26 12:01:03,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:03,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405558029] [2023-11-26 12:01:03,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405558029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:03,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:03,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:03,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400541307] [2023-11-26 12:01:03,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:03,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:03,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:03,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:03,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:03,093 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:01:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:03,316 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2023-11-26 12:01:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:01:03,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-26 12:01:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:03,324 INFO L225 Difference]: With dead ends: 96 [2023-11-26 12:01:03,325 INFO L226 Difference]: Without dead ends: 90 [2023-11-26 12:01:03,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:03,332 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 124 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:03,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 120 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:01:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-26 12:01:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2023-11-26 12:01:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.66) internal successors, (83), 69 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:01:03,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2023-11-26 12:01:03,364 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 14 [2023-11-26 12:01:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:03,364 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2023-11-26 12:01:03,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:01:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2023-11-26 12:01:03,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-26 12:01:03,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:03,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:03,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:03,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 12:01:03,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:03,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:03,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1567877597, now seen corresponding path program 1 times [2023-11-26 12:01:03,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:03,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487252808] [2023-11-26 12:01:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:03,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:03,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:03,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028629112] [2023-11-26 12:01:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:03,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:03,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:03,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:03,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:01:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:01:03,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:01:03,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:03,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:03,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487252808] [2023-11-26 12:01:03,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:03,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028629112] [2023-11-26 12:01:03,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028629112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:03,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:03,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:03,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427974170] [2023-11-26 12:01:03,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:03,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:03,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:03,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:03,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:03,724 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:01:03,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:03,800 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2023-11-26 12:01:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:03,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-26 12:01:03,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:03,802 INFO L225 Difference]: With dead ends: 79 [2023-11-26 12:01:03,802 INFO L226 Difference]: Without dead ends: 73 [2023-11-26 12:01:03,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 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 12:01:03,804 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:03,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 52 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:03,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-26 12:01:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-26 12:01:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 66 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:01:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2023-11-26 12:01:03,820 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 16 [2023-11-26 12:01:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:03,820 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2023-11-26 12:01:03,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:01:03,821 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2023-11-26 12:01:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 12:01:03,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:03,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:03,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:04,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:04,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:04,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:04,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1359565303, now seen corresponding path program 1 times [2023-11-26 12:01:04,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:04,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008981990] [2023-11-26 12:01:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:04,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:04,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:04,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861404875] [2023-11-26 12:01:04,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:04,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:04,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:04,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:04,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:01:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:04,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:01:04,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:01:04,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:04,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:04,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008981990] [2023-11-26 12:01:04,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:04,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861404875] [2023-11-26 12:01:04,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861404875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:04,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:04,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:04,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049190] [2023-11-26 12:01:04,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:04,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:04,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:04,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:04,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:04,140 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:01:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:04,228 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2023-11-26 12:01:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:04,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-11-26 12:01:04,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:04,232 INFO L225 Difference]: With dead ends: 119 [2023-11-26 12:01:04,232 INFO L226 Difference]: Without dead ends: 108 [2023-11-26 12:01:04,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 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 12:01:04,234 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 44 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:04,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 64 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-26 12:01:04,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2023-11-26 12:01:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 90 states have internal predecessors, (108), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:01:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2023-11-26 12:01:04,256 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 17 [2023-11-26 12:01:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:04,257 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2023-11-26 12:01:04,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:01:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2023-11-26 12:01:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-26 12:01:04,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:04,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:04,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:04,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:04,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:04,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:04,466 INFO L85 PathProgramCache]: Analyzing trace with hash -803148513, now seen corresponding path program 1 times [2023-11-26 12:01:04,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:04,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735868839] [2023-11-26 12:01:04,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:04,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:04,499 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:04,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316157270] [2023-11-26 12:01:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:04,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:04,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:04,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:04,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:01:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:04,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:01:04,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:04,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:04,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:04,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735868839] [2023-11-26 12:01:04,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:04,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316157270] [2023-11-26 12:01:04,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316157270] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:04,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:04,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-26 12:01:04,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544199355] [2023-11-26 12:01:04,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:04,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:01:04,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:01:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:04,956 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 12:01:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:05,293 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2023-11-26 12:01:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:01:05,294 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-26 12:01:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:05,296 INFO L225 Difference]: With dead ends: 111 [2023-11-26 12:01:05,296 INFO L226 Difference]: Without dead ends: 108 [2023-11-26 12:01:05,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-26 12:01:05,298 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 102 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:05,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 89 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:01:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-26 12:01:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2023-11-26 12:01:05,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.3875) internal successors, (111), 94 states have internal predecessors, (111), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:01:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2023-11-26 12:01:05,315 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 18 [2023-11-26 12:01:05,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:05,316 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2023-11-26 12:01:05,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 12:01:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2023-11-26 12:01:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-26 12:01:05,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:05,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:05,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:05,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:05,524 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:05,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:05,525 INFO L85 PathProgramCache]: Analyzing trace with hash 872199929, now seen corresponding path program 1 times [2023-11-26 12:01:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:05,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561753905] [2023-11-26 12:01:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:05,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:05,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:05,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028553689] [2023-11-26 12:01:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:05,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:05,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:05,540 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:05,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:01:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:05,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:01:05,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:05,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:05,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:05,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561753905] [2023-11-26 12:01:05,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:05,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028553689] [2023-11-26 12:01:05,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028553689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:05,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:05,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:05,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252724106] [2023-11-26 12:01:05,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:05,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:05,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:05,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:05,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:05,894 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:01:06,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:06,095 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2023-11-26 12:01:06,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:01:06,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-26 12:01:06,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:06,097 INFO L225 Difference]: With dead ends: 104 [2023-11-26 12:01:06,097 INFO L226 Difference]: Without dead ends: 103 [2023-11-26 12:01:06,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:01:06,098 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:06,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 86 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:01:06,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-26 12:01:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-26 12:01:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.375) internal successors, (110), 94 states have internal predecessors, (110), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:01:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2023-11-26 12:01:06,114 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 19 [2023-11-26 12:01:06,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:06,115 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2023-11-26 12:01:06,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:01:06,115 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2023-11-26 12:01:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 12:01:06,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:06,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:06,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:06,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:06,328 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:06,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:06,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2088001174, now seen corresponding path program 1 times [2023-11-26 12:01:06,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:06,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777668416] [2023-11-26 12:01:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:06,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:06,343 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:06,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843899910] [2023-11-26 12:01:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:06,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:06,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:06,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:06,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:01:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:06,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:01:06,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:01:06,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:06,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:06,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777668416] [2023-11-26 12:01:06,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:06,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843899910] [2023-11-26 12:01:06,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843899910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:06,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:06,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:06,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334122500] [2023-11-26 12:01:06,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:06,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:06,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:06,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:06,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:06,459 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:01:06,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:06,503 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2023-11-26 12:01:06,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:06,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2023-11-26 12:01:06,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:06,505 INFO L225 Difference]: With dead ends: 103 [2023-11-26 12:01:06,506 INFO L226 Difference]: Without dead ends: 101 [2023-11-26 12:01:06,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:06,507 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 59 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:06,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 57 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:06,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-26 12:01:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-26 12:01:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 80 states have (on average 1.3375) internal successors, (107), 92 states have internal predecessors, (107), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:01:06,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2023-11-26 12:01:06,521 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 32 [2023-11-26 12:01:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:06,522 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2023-11-26 12:01:06,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:01:06,523 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2023-11-26 12:01:06,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 12:01:06,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:06,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:06,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:06,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 12:01:06,730 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:06,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1400336030, now seen corresponding path program 1 times [2023-11-26 12:01:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:06,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368477645] [2023-11-26 12:01:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:06,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:06,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:06,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327137673] [2023-11-26 12:01:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:06,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:06,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:06,754 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:06,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:01:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:06,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:01:06,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:01:06,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:07,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368477645] [2023-11-26 12:01:07,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327137673] [2023-11-26 12:01:07,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327137673] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:07,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:07,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 12:01:07,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8222513] [2023-11-26 12:01:07,156 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:07,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:07,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:01:07,158 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:01:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:07,283 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2023-11-26 12:01:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:07,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2023-11-26 12:01:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:07,285 INFO L225 Difference]: With dead ends: 110 [2023-11-26 12:01:07,285 INFO L226 Difference]: Without dead ends: 108 [2023-11-26 12:01:07,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:07,287 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 84 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:07,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 65 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:07,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-26 12:01:07,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2023-11-26 12:01:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.3125) internal successors, (105), 90 states have internal predecessors, (105), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:01:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2023-11-26 12:01:07,299 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 34 [2023-11-26 12:01:07,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:07,299 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2023-11-26 12:01:07,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:01:07,300 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2023-11-26 12:01:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-26 12:01:07,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:07,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:07,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:07,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 12:01:07,508 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:07,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:07,508 INFO L85 PathProgramCache]: Analyzing trace with hash -460743922, now seen corresponding path program 1 times [2023-11-26 12:01:07,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:07,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121592962] [2023-11-26 12:01:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:07,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:07,520 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:07,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063070122] [2023-11-26 12:01:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:07,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:07,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:07,527 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:07,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:01:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:07,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:01:07,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:01:07,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:07,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:07,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121592962] [2023-11-26 12:01:07,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:07,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063070122] [2023-11-26 12:01:07,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063070122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:07,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:07,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 12:01:07,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566421207] [2023-11-26 12:01:07,930 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:07,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:07,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:07,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:01:07,932 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:01:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:08,067 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2023-11-26 12:01:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:08,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2023-11-26 12:01:08,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:08,069 INFO L225 Difference]: With dead ends: 157 [2023-11-26 12:01:08,069 INFO L226 Difference]: Without dead ends: 154 [2023-11-26 12:01:08,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:08,072 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 122 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:08,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 82 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-26 12:01:08,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 133. [2023-11-26 12:01:08,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 112 states have (on average 1.3303571428571428) internal successors, (149), 122 states have internal predecessors, (149), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:01:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 165 transitions. [2023-11-26 12:01:08,092 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 165 transitions. Word has length 35 [2023-11-26 12:01:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:08,093 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 165 transitions. [2023-11-26 12:01:08,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:01:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 165 transitions. [2023-11-26 12:01:08,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-26 12:01:08,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:08,100 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:08,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:08,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-26 12:01:08,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:08,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:08,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1861508742, now seen corresponding path program 1 times [2023-11-26 12:01:08,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:08,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42411930] [2023-11-26 12:01:08,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:08,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:08,317 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:08,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129183779] [2023-11-26 12:01:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:08,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:08,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:08,319 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:08,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 12:01:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:08,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:01:08,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:08,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:08,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:08,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42411930] [2023-11-26 12:01:08,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:08,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129183779] [2023-11-26 12:01:08,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129183779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:08,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:08,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2023-11-26 12:01:08,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917277692] [2023-11-26 12:01:08,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:08,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:01:08,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:08,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:01:08,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:08,639 INFO L87 Difference]: Start difference. First operand 133 states and 165 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:01:08,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:08,904 INFO L93 Difference]: Finished difference Result 141 states and 173 transitions. [2023-11-26 12:01:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:08,905 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2023-11-26 12:01:08,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:08,906 INFO L225 Difference]: With dead ends: 141 [2023-11-26 12:01:08,906 INFO L226 Difference]: Without dead ends: 135 [2023-11-26 12:01:08,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-26 12:01:08,908 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 112 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:08,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 93 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:01:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-26 12:01:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2023-11-26 12:01:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 114 states have (on average 1.2982456140350878) internal successors, (148), 123 states have internal predecessors, (148), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:01:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 164 transitions. [2023-11-26 12:01:08,922 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 164 transitions. Word has length 37 [2023-11-26 12:01:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:08,923 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 164 transitions. [2023-11-26 12:01:08,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:01:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 164 transitions. [2023-11-26 12:01:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 12:01:08,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:08,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:08,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:09,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 12:01:09,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:09,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:09,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1872196208, now seen corresponding path program 1 times [2023-11-26 12:01:09,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:09,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711086031] [2023-11-26 12:01:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:09,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:09,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:09,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768134834] [2023-11-26 12:01:09,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:09,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:09,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:09,142 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:09,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 12:01:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:09,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:01:09,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:01:09,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:09,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711086031] [2023-11-26 12:01:09,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768134834] [2023-11-26 12:01:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768134834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:09,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:09,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796385282] [2023-11-26 12:01:09,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:09,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:09,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:09,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:09,246 INFO L87 Difference]: Start difference. First operand 134 states and 164 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:01:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:09,321 INFO L93 Difference]: Finished difference Result 136 states and 164 transitions. [2023-11-26 12:01:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:09,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2023-11-26 12:01:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:09,323 INFO L225 Difference]: With dead ends: 136 [2023-11-26 12:01:09,323 INFO L226 Difference]: Without dead ends: 135 [2023-11-26 12:01:09,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:09,324 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:09,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 38 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:09,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-26 12:01:09,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2023-11-26 12:01:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 114 states have (on average 1.2719298245614035) internal successors, (145), 123 states have internal predecessors, (145), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:01:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 161 transitions. [2023-11-26 12:01:09,337 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 161 transitions. Word has length 38 [2023-11-26 12:01:09,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:09,338 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 161 transitions. [2023-11-26 12:01:09,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:01:09,338 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 161 transitions. [2023-11-26 12:01:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 12:01:09,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:09,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:09,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:09,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 12:01:09,545 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:09,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:09,546 INFO L85 PathProgramCache]: Analyzing trace with hash 693347430, now seen corresponding path program 1 times [2023-11-26 12:01:09,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:09,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152919159] [2023-11-26 12:01:09,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:09,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:09,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:09,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203467189] [2023-11-26 12:01:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:09,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:09,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:09,557 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:09,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 12:01:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:09,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 12:01:09,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:09,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:01:10,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:10,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152919159] [2023-11-26 12:01:10,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:10,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203467189] [2023-11-26 12:01:10,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203467189] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:10,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:10,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-11-26 12:01:10,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180072438] [2023-11-26 12:01:10,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:10,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 12:01:10,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:10,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 12:01:10,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-26 12:01:10,047 INFO L87 Difference]: Start difference. First operand 134 states and 161 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 12:01:10,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:10,245 INFO L93 Difference]: Finished difference Result 134 states and 161 transitions. [2023-11-26 12:01:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:01:10,246 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2023-11-26 12:01:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:10,247 INFO L225 Difference]: With dead ends: 134 [2023-11-26 12:01:10,247 INFO L226 Difference]: Without dead ends: 131 [2023-11-26 12:01:10,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-26 12:01:10,249 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 77 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:10,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 59 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-26 12:01:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2023-11-26 12:01:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 117 states have internal predecessors, (135), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:01:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2023-11-26 12:01:10,262 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 38 [2023-11-26 12:01:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:10,263 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2023-11-26 12:01:10,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 12:01:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2023-11-26 12:01:10,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 12:01:10,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:10,264 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:10,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:10,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:10,472 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:10,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2091459640, now seen corresponding path program 1 times [2023-11-26 12:01:10,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:10,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571152640] [2023-11-26 12:01:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:10,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:10,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:10,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199973884] [2023-11-26 12:01:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:10,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:10,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:10,483 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:10,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 12:01:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:10,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:01:10,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:01:10,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:10,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:10,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571152640] [2023-11-26 12:01:10,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:10,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199973884] [2023-11-26 12:01:10,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199973884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:10,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:10,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230772984] [2023-11-26 12:01:10,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:10,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:10,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:10,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:10,586 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:01:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:10,647 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2023-11-26 12:01:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:10,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-11-26 12:01:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:10,649 INFO L225 Difference]: With dead ends: 130 [2023-11-26 12:01:10,649 INFO L226 Difference]: Without dead ends: 129 [2023-11-26 12:01:10,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:10,650 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:10,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 49 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:10,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-26 12:01:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2023-11-26 12:01:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 117 states have internal predecessors, (132), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:01:10,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2023-11-26 12:01:10,664 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 39 [2023-11-26 12:01:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:10,664 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2023-11-26 12:01:10,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:01:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2023-11-26 12:01:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 12:01:10,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:10,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:10,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:10,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 12:01:10,871 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:10,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:10,871 INFO L85 PathProgramCache]: Analyzing trace with hash 18933906, now seen corresponding path program 1 times [2023-11-26 12:01:10,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:10,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269434844] [2023-11-26 12:01:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:10,890 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:10,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840999211] [2023-11-26 12:01:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:10,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:10,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:10,894 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:10,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 12:01:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:10,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:01:10,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:01:11,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:01:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:11,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269434844] [2023-11-26 12:01:11,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:11,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840999211] [2023-11-26 12:01:11,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840999211] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:11,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:11,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 12:01:11,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609567309] [2023-11-26 12:01:11,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:11,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:01:11,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:11,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:01:11,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:11,258 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:01:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:12,153 INFO L93 Difference]: Finished difference Result 167 states and 192 transitions. [2023-11-26 12:01:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:01:12,153 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2023-11-26 12:01:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:12,155 INFO L225 Difference]: With dead ends: 167 [2023-11-26 12:01:12,155 INFO L226 Difference]: Without dead ends: 166 [2023-11-26 12:01:12,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-11-26 12:01:12,156 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 136 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:12,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 72 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 12:01:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-26 12:01:12,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 127. [2023-11-26 12:01:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 116 states have internal predecessors, (130), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:01:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2023-11-26 12:01:12,171 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 39 [2023-11-26 12:01:12,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:12,171 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2023-11-26 12:01:12,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:01:12,172 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2023-11-26 12:01:12,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-26 12:01:12,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:12,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:12,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:12,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 12:01:12,378 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:12,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1223098600, now seen corresponding path program 1 times [2023-11-26 12:01:12,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981128770] [2023-11-26 12:01:12,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,397 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:12,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273526610] [2023-11-26 12:01:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:12,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:12,407 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:12,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 12:01:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:01:12,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 12:01:12,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 12:01:12,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981128770] [2023-11-26 12:01:12,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273526610] [2023-11-26 12:01:12,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273526610] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:12,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:12,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-26 12:01:12,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310765374] [2023-11-26 12:01:12,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:12,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:12,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:12,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:12,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:12,587 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 12:01:12,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:12,693 INFO L93 Difference]: Finished difference Result 293 states and 345 transitions. [2023-11-26 12:01:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:12,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 47 [2023-11-26 12:01:12,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:12,696 INFO L225 Difference]: With dead ends: 293 [2023-11-26 12:01:12,696 INFO L226 Difference]: Without dead ends: 291 [2023-11-26 12:01:12,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:12,698 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:12,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 87 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:12,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-26 12:01:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 254. [2023-11-26 12:01:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 230 states have (on average 1.1565217391304348) internal successors, (266), 234 states have internal predecessors, (266), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-26 12:01:12,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 300 transitions. [2023-11-26 12:01:12,728 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 300 transitions. Word has length 47 [2023-11-26 12:01:12,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:12,729 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 300 transitions. [2023-11-26 12:01:12,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 12:01:12,729 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 300 transitions. [2023-11-26 12:01:12,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 12:01:12,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:12,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:12,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:12,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 12:01:12,938 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:12,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1565427033, now seen corresponding path program 2 times [2023-11-26 12:01:12,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146979853] [2023-11-26 12:01:12,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:12,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330981275] [2023-11-26 12:01:12,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:01:12,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:12,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:12,949 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:12,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 12:01:13,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:01:13,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:13,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:01:13,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 12:01:13,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:13,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:13,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146979853] [2023-11-26 12:01:13,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:13,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330981275] [2023-11-26 12:01:13,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330981275] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:13,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:13,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 12:01:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582140717] [2023-11-26 12:01:13,328 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:13,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:13,330 INFO L87 Difference]: Start difference. First operand 254 states and 300 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:01:13,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:13,491 INFO L93 Difference]: Finished difference Result 423 states and 500 transitions. [2023-11-26 12:01:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:13,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2023-11-26 12:01:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:13,495 INFO L225 Difference]: With dead ends: 423 [2023-11-26 12:01:13,495 INFO L226 Difference]: Without dead ends: 418 [2023-11-26 12:01:13,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:01:13,496 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:13,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 117 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-26 12:01:13,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 279. [2023-11-26 12:01:13,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 254 states have (on average 1.1496062992125984) internal successors, (292), 258 states have internal predecessors, (292), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 12:01:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 328 transitions. [2023-11-26 12:01:13,532 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 328 transitions. Word has length 55 [2023-11-26 12:01:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:13,532 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 328 transitions. [2023-11-26 12:01:13,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:01:13,533 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 328 transitions. [2023-11-26 12:01:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 12:01:13,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:13,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:13,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:13,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 12:01:13,740 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:13,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1638756971, now seen corresponding path program 2 times [2023-11-26 12:01:13,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:13,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128692059] [2023-11-26 12:01:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:13,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:13,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:13,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854057483] [2023-11-26 12:01:13,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:01:13,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:13,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:13,757 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:13,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 12:01:13,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:01:13,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:13,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 12:01:13,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 12:01:14,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:01:14,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:14,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128692059] [2023-11-26 12:01:14,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:14,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854057483] [2023-11-26 12:01:14,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854057483] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:14,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:14,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2023-11-26 12:01:14,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655935752] [2023-11-26 12:01:14,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:14,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 12:01:14,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 12:01:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:01:14,437 INFO L87 Difference]: Start difference. First operand 279 states and 328 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 12:01:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:14,913 INFO L93 Difference]: Finished difference Result 339 states and 397 transitions. [2023-11-26 12:01:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:01:14,914 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 57 [2023-11-26 12:01:14,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:14,917 INFO L225 Difference]: With dead ends: 339 [2023-11-26 12:01:14,917 INFO L226 Difference]: Without dead ends: 338 [2023-11-26 12:01:14,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2023-11-26 12:01:14,919 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 111 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:14,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 96 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:01:14,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-26 12:01:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2023-11-26 12:01:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 304 states have (on average 1.138157894736842) internal successors, (346), 308 states have internal predecessors, (346), 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 12:01:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 390 transitions. [2023-11-26 12:01:14,961 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 390 transitions. Word has length 57 [2023-11-26 12:01:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:14,962 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 390 transitions. [2023-11-26 12:01:14,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 12:01:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 390 transitions. [2023-11-26 12:01:14,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 12:01:14,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:14,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:14,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:15,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 12:01:15,170 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:15,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:15,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1117961183, now seen corresponding path program 1 times [2023-11-26 12:01:15,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:15,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771612090] [2023-11-26 12:01:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:15,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:15,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:15,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559185563] [2023-11-26 12:01:15,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:15,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:15,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:15,185 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:15,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 12:01:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:15,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:01:15,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 12:01:15,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:15,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:15,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771612090] [2023-11-26 12:01:15,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:15,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559185563] [2023-11-26 12:01:15,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559185563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:15,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:15,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:01:15,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548957184] [2023-11-26 12:01:15,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:15,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:15,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:15,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:15,330 INFO L87 Difference]: Start difference. First operand 333 states and 390 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:01:15,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:15,418 INFO L93 Difference]: Finished difference Result 541 states and 633 transitions. [2023-11-26 12:01:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:15,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2023-11-26 12:01:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:15,421 INFO L225 Difference]: With dead ends: 541 [2023-11-26 12:01:15,421 INFO L226 Difference]: Without dead ends: 307 [2023-11-26 12:01:15,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:15,426 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:15,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 87 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-26 12:01:15,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 304. [2023-11-26 12:01:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 277 states have (on average 1.1263537906137184) internal successors, (312), 281 states have internal predecessors, (312), 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 12:01:15,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 352 transitions. [2023-11-26 12:01:15,459 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 352 transitions. Word has length 57 [2023-11-26 12:01:15,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:15,460 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 352 transitions. [2023-11-26 12:01:15,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:01:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 352 transitions. [2023-11-26 12:01:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 12:01:15,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:15,463 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:15,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:15,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 12:01:15,669 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:15,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:15,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1266525174, now seen corresponding path program 1 times [2023-11-26 12:01:15,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:15,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843508958] [2023-11-26 12:01:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:15,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:15,680 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:15,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927153902] [2023-11-26 12:01:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:15,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:15,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:15,682 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:15,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 12:01:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:15,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:01:15,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 12:01:15,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 12:01:16,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:16,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843508958] [2023-11-26 12:01:16,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:16,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927153902] [2023-11-26 12:01:16,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927153902] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:16,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:16,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-26 12:01:16,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155709863] [2023-11-26 12:01:16,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:16,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:16,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:16,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:16,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:16,014 INFO L87 Difference]: Start difference. First operand 304 states and 352 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 12:01:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:16,231 INFO L93 Difference]: Finished difference Result 332 states and 376 transitions. [2023-11-26 12:01:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:16,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 75 [2023-11-26 12:01:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:16,235 INFO L225 Difference]: With dead ends: 332 [2023-11-26 12:01:16,235 INFO L226 Difference]: Without dead ends: 308 [2023-11-26 12:01:16,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:01:16,236 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 43 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:16,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 178 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:01:16,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-26 12:01:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2023-11-26 12:01:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 277 states have (on average 1.1191335740072201) internal successors, (310), 281 states have internal predecessors, (310), 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 12:01:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 350 transitions. [2023-11-26 12:01:16,269 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 350 transitions. Word has length 75 [2023-11-26 12:01:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:16,270 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 350 transitions. [2023-11-26 12:01:16,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 12:01:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 350 transitions. [2023-11-26 12:01:16,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 12:01:16,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:16,271 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:16,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:16,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:16,477 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:16,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1935764544, now seen corresponding path program 3 times [2023-11-26 12:01:16,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:16,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177280321] [2023-11-26 12:01:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:16,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:16,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:16,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130854343] [2023-11-26 12:01:16,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 12:01:16,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:16,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:16,492 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:16,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 12:01:16,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 12:01:16,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:16,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:01:16,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 38 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 12:01:16,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:18,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:18,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177280321] [2023-11-26 12:01:18,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:18,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130854343] [2023-11-26 12:01:18,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130854343] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:18,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:18,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-11-26 12:01:18,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590222582] [2023-11-26 12:01:18,196 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:18,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:18,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:18,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:18,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:18,197 INFO L87 Difference]: Start difference. First operand 304 states and 350 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:01:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:18,311 INFO L93 Difference]: Finished difference Result 307 states and 350 transitions. [2023-11-26 12:01:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:01:18,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2023-11-26 12:01:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:18,314 INFO L225 Difference]: With dead ends: 307 [2023-11-26 12:01:18,314 INFO L226 Difference]: Without dead ends: 306 [2023-11-26 12:01:18,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:18,316 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:18,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 83 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:01:18,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-26 12:01:18,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2023-11-26 12:01:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 277 states have (on average 1.1155234657039712) internal successors, (309), 281 states have internal predecessors, (309), 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 12:01:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 349 transitions. [2023-11-26 12:01:18,356 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 349 transitions. Word has length 75 [2023-11-26 12:01:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:18,357 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 349 transitions. [2023-11-26 12:01:18,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:01:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 349 transitions. [2023-11-26 12:01:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 12:01:18,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:18,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:18,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:18,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:18,571 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:18,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash -385233554, now seen corresponding path program 2 times [2023-11-26 12:01:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:18,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629452725] [2023-11-26 12:01:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:18,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:18,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:18,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697937725] [2023-11-26 12:01:18,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:01:18,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:18,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:18,585 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:18,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 12:01:18,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:01:18,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:18,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:01:18,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 12:01:18,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 12:01:19,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629452725] [2023-11-26 12:01:19,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697937725] [2023-11-26 12:01:19,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697937725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:19,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:19,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-26 12:01:19,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685823467] [2023-11-26 12:01:19,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:19,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 12:01:19,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:19,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 12:01:19,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:01:19,063 INFO L87 Difference]: Start difference. First operand 304 states and 349 transitions. Second operand has 15 states, 14 states have (on average 8.142857142857142) internal successors, (114), 15 states have internal predecessors, (114), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-26 12:01:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:19,755 INFO L93 Difference]: Finished difference Result 681 states and 768 transitions. [2023-11-26 12:01:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-26 12:01:19,756 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.142857142857142) internal successors, (114), 15 states have internal predecessors, (114), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 77 [2023-11-26 12:01:19,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:19,760 INFO L225 Difference]: With dead ends: 681 [2023-11-26 12:01:19,761 INFO L226 Difference]: Without dead ends: 680 [2023-11-26 12:01:19,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2023-11-26 12:01:19,763 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 155 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:19,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 112 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:01:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-11-26 12:01:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 583. [2023-11-26 12:01:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 542 states have (on average 1.088560885608856) internal successors, (590), 546 states have internal predecessors, (590), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-26 12:01:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 658 transitions. [2023-11-26 12:01:19,840 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 658 transitions. Word has length 77 [2023-11-26 12:01:19,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:19,841 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 658 transitions. [2023-11-26 12:01:19,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.142857142857142) internal successors, (114), 15 states have internal predecessors, (114), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-26 12:01:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 658 transitions. [2023-11-26 12:01:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-26 12:01:19,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:19,843 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:19,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:20,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:20,050 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:20,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1602868179, now seen corresponding path program 1 times [2023-11-26 12:01:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:20,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132349759] [2023-11-26 12:01:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:20,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:20,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:20,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186126860] [2023-11-26 12:01:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:20,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:20,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:20,063 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:20,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 12:01:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:20,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:01:20,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 12:01:20,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 12:01:20,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:20,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132349759] [2023-11-26 12:01:20,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:20,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186126860] [2023-11-26 12:01:20,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186126860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:20,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:20,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-26 12:01:20,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757875955] [2023-11-26 12:01:20,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:20,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:01:20,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:20,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:01:20,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:20,397 INFO L87 Difference]: Start difference. First operand 583 states and 658 transitions. Second operand has 10 states, 9 states have (on average 13.88888888888889) internal successors, (125), 10 states have internal predecessors, (125), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-26 12:01:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:21,167 INFO L93 Difference]: Finished difference Result 1177 states and 1372 transitions. [2023-11-26 12:01:21,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:01:21,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.88888888888889) internal successors, (125), 10 states have internal predecessors, (125), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 90 [2023-11-26 12:01:21,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:21,176 INFO L225 Difference]: With dead ends: 1177 [2023-11-26 12:01:21,176 INFO L226 Difference]: Without dead ends: 1176 [2023-11-26 12:01:21,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:21,179 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 157 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:21,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 173 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 12:01:21,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2023-11-26 12:01:21,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1137. [2023-11-26 12:01:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1061 states have (on average 1.1413760603204524) internal successors, (1211), 1065 states have internal predecessors, (1211), 69 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-26 12:01:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1349 transitions. [2023-11-26 12:01:21,312 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1349 transitions. Word has length 90 [2023-11-26 12:01:21,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:21,313 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1349 transitions. [2023-11-26 12:01:21,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.88888888888889) internal successors, (125), 10 states have internal predecessors, (125), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-26 12:01:21,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1349 transitions. [2023-11-26 12:01:21,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-26 12:01:21,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:21,315 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:21,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:21,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:21,521 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:21,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash -206256443, now seen corresponding path program 2 times [2023-11-26 12:01:21,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:21,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364063196] [2023-11-26 12:01:21,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:21,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:21,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:21,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893582330] [2023-11-26 12:01:21,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:01:21,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:21,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:21,547 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:21,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-26 12:01:21,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:01:21,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:21,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:01:21,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 12:01:21,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:22,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:22,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364063196] [2023-11-26 12:01:22,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:22,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893582330] [2023-11-26 12:01:22,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893582330] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:22,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:22,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 12:01:22,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189064827] [2023-11-26 12:01:22,068 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:22,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:22,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:22,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:01:22,070 INFO L87 Difference]: Start difference. First operand 1137 states and 1349 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 12:01:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:22,387 INFO L93 Difference]: Finished difference Result 1267 states and 1502 transitions. [2023-11-26 12:01:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:01:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 95 [2023-11-26 12:01:22,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:22,395 INFO L225 Difference]: With dead ends: 1267 [2023-11-26 12:01:22,396 INFO L226 Difference]: Without dead ends: 1263 [2023-11-26 12:01:22,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:22,397 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 27 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:22,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 162 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:01:22,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2023-11-26 12:01:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1257. [2023-11-26 12:01:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1174 states have (on average 1.1337308347529813) internal successors, (1331), 1178 states have internal predecessors, (1331), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-26 12:01:22,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1483 transitions. [2023-11-26 12:01:22,517 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1483 transitions. Word has length 95 [2023-11-26 12:01:22,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:22,518 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1483 transitions. [2023-11-26 12:01:22,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 12:01:22,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1483 transitions. [2023-11-26 12:01:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 12:01:22,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:22,533 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:22,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:22,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:22,739 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:22,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:22,739 INFO L85 PathProgramCache]: Analyzing trace with hash -940589179, now seen corresponding path program 2 times [2023-11-26 12:01:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:22,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239204911] [2023-11-26 12:01:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:22,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:22,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64481579] [2023-11-26 12:01:22,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:01:22,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:22,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:22,759 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:22,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-26 12:01:22,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:01:22,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:22,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:01:22,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-26 12:01:22,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-26 12:01:23,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:23,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239204911] [2023-11-26 12:01:23,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:23,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64481579] [2023-11-26 12:01:23,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64481579] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:23,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:23,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-26 12:01:23,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933902796] [2023-11-26 12:01:23,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:23,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:01:23,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:23,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:01:23,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:01:23,139 INFO L87 Difference]: Start difference. First operand 1257 states and 1483 transitions. Second operand has 12 states, 11 states have (on average 13.545454545454545) internal successors, (149), 12 states have internal predecessors, (149), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-26 12:01:23,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:23,508 INFO L93 Difference]: Finished difference Result 2490 states and 3022 transitions. [2023-11-26 12:01:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:01:23,508 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 13.545454545454545) internal successors, (149), 12 states have internal predecessors, (149), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 107 [2023-11-26 12:01:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:23,523 INFO L225 Difference]: With dead ends: 2490 [2023-11-26 12:01:23,523 INFO L226 Difference]: Without dead ends: 2489 [2023-11-26 12:01:23,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:01:23,525 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 185 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:23,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 181 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:01:23,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2023-11-26 12:01:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2286. [2023-11-26 12:01:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 2138 states have (on average 1.1693171188026192) internal successors, (2500), 2142 states have internal predecessors, (2500), 141 states have call successors, (141), 2 states have call predecessors, (141), 2 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2023-11-26 12:01:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 2782 transitions. [2023-11-26 12:01:23,844 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 2782 transitions. Word has length 107 [2023-11-26 12:01:23,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:23,845 INFO L495 AbstractCegarLoop]: Abstraction has 2286 states and 2782 transitions. [2023-11-26 12:01:23,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 13.545454545454545) internal successors, (149), 12 states have internal predecessors, (149), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-26 12:01:23,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 2782 transitions. [2023-11-26 12:01:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-26 12:01:23,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:23,847 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:23,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:24,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-26 12:01:24,053 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:24,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash -321833708, now seen corresponding path program 3 times [2023-11-26 12:01:24,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:24,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427620248] [2023-11-26 12:01:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:24,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:24,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193194668] [2023-11-26 12:01:24,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 12:01:24,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:24,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:24,066 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:24,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-26 12:01:24,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-26 12:01:24,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:24,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:01:24,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 12:01:24,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:24,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427620248] [2023-11-26 12:01:24,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193194668] [2023-11-26 12:01:24,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193194668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:24,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:24,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 12:01:24,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823619654] [2023-11-26 12:01:24,548 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:24,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:24,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:24,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:24,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:24,550 INFO L87 Difference]: Start difference. First operand 2286 states and 2782 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 12:01:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:24,977 INFO L93 Difference]: Finished difference Result 3666 states and 4543 transitions. [2023-11-26 12:01:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:24,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 115 [2023-11-26 12:01:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:24,992 INFO L225 Difference]: With dead ends: 3666 [2023-11-26 12:01:24,993 INFO L226 Difference]: Without dead ends: 2258 [2023-11-26 12:01:24,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:01:24,999 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 61 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:24,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 184 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:01:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2023-11-26 12:01:25,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2118. [2023-11-26 12:01:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1980 states have (on average 1.1737373737373737) internal successors, (2324), 1984 states have internal predecessors, (2324), 131 states have call successors, (131), 2 states have call predecessors, (131), 2 states have return successors, (131), 131 states have call predecessors, (131), 131 states have call successors, (131) [2023-11-26 12:01:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2586 transitions. [2023-11-26 12:01:25,266 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2586 transitions. Word has length 115 [2023-11-26 12:01:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:25,267 INFO L495 AbstractCegarLoop]: Abstraction has 2118 states and 2586 transitions. [2023-11-26 12:01:25,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 12:01:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2586 transitions. [2023-11-26 12:01:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-26 12:01:25,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:25,271 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:25,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:25,478 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:25,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash -897409821, now seen corresponding path program 4 times [2023-11-26 12:01:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:25,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835039389] [2023-11-26 12:01:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:25,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:25,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:25,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022274790] [2023-11-26 12:01:25,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 12:01:25,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:25,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:25,492 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:25,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-26 12:01:25,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 12:01:25,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:25,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-26 12:01:25,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:26,742 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 9 proven. 220 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-26 12:01:26,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:26,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:26,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835039389] [2023-11-26 12:01:26,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:26,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022274790] [2023-11-26 12:01:26,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022274790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:26,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:26,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-26 12:01:26,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379961263] [2023-11-26 12:01:26,917 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:26,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 12:01:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:26,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 12:01:26,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:01:26,920 INFO L87 Difference]: Start difference. First operand 2118 states and 2586 transitions. Second operand has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-26 12:01:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:28,193 INFO L93 Difference]: Finished difference Result 2573 states and 3139 transitions. [2023-11-26 12:01:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 12:01:28,194 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 135 [2023-11-26 12:01:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:28,210 INFO L225 Difference]: With dead ends: 2573 [2023-11-26 12:01:28,210 INFO L226 Difference]: Without dead ends: 2569 [2023-11-26 12:01:28,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-11-26 12:01:28,212 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:28,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 211 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 12:01:28,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2023-11-26 12:01:28,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2236. [2023-11-26 12:01:28,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2090 states have (on average 1.1717703349282296) internal successors, (2449), 2094 states have internal predecessors, (2449), 139 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) [2023-11-26 12:01:28,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2727 transitions. [2023-11-26 12:01:28,506 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2727 transitions. Word has length 135 [2023-11-26 12:01:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:28,506 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 2727 transitions. [2023-11-26 12:01:28,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-26 12:01:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2727 transitions. [2023-11-26 12:01:28,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-26 12:01:28,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:28,510 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:28,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:28,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:28,717 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:28,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:28,718 INFO L85 PathProgramCache]: Analyzing trace with hash -62504019, now seen corresponding path program 5 times [2023-11-26 12:01:28,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:28,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981306461] [2023-11-26 12:01:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:28,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:28,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:28,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846421414] [2023-11-26 12:01:28,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 12:01:28,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:28,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:28,738 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:28,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-26 12:01:28,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-26 12:01:28,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:28,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 12:01:28,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 12 proven. 198 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-26 12:01:29,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:29,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:29,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981306461] [2023-11-26 12:01:29,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846421414] [2023-11-26 12:01:29,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846421414] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:29,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:29,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-26 12:01:29,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286642750] [2023-11-26 12:01:29,606 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:29,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:01:29,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:29,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:01:29,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:01:29,608 INFO L87 Difference]: Start difference. First operand 2236 states and 2727 transitions. Second operand has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-26 12:01:30,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:30,192 INFO L93 Difference]: Finished difference Result 2555 states and 3118 transitions. [2023-11-26 12:01:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:30,193 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 135 [2023-11-26 12:01:30,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:30,207 INFO L225 Difference]: With dead ends: 2555 [2023-11-26 12:01:30,207 INFO L226 Difference]: Without dead ends: 2551 [2023-11-26 12:01:30,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:01:30,209 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 31 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:30,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 288 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:01:30,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2023-11-26 12:01:30,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 2545. [2023-11-26 12:01:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2379 states have (on average 1.1664564943253468) internal successors, (2775), 2383 states have internal predecessors, (2775), 159 states have call successors, (159), 2 states have call predecessors, (159), 2 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-11-26 12:01:30,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3093 transitions. [2023-11-26 12:01:30,468 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3093 transitions. Word has length 135 [2023-11-26 12:01:30,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:30,469 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 3093 transitions. [2023-11-26 12:01:30,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-26 12:01:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3093 transitions. [2023-11-26 12:01:30,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-26 12:01:30,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:30,473 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:30,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:30,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 12:01:30,680 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:30,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:30,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1350152142, now seen corresponding path program 6 times [2023-11-26 12:01:30,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:30,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827861586] [2023-11-26 12:01:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:30,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:30,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:30,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784741335] [2023-11-26 12:01:30,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-26 12:01:30,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:30,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:30,704 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:30,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-26 12:01:30,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-11-26 12:01:30,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:30,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:01:30,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 109 proven. 208 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-26 12:01:31,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 109 proven. 208 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-26 12:01:31,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827861586] [2023-11-26 12:01:31,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784741335] [2023-11-26 12:01:31,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784741335] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:31,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:31,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2023-11-26 12:01:31,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232526810] [2023-11-26 12:01:31,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 12:01:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:31,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 12:01:31,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:01:31,528 INFO L87 Difference]: Start difference. First operand 2545 states and 3093 transitions. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-26 12:01:32,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:32,628 INFO L93 Difference]: Finished difference Result 5407 states and 6700 transitions. [2023-11-26 12:01:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:01:32,632 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 155 [2023-11-26 12:01:32,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:32,657 INFO L225 Difference]: With dead ends: 5407 [2023-11-26 12:01:32,657 INFO L226 Difference]: Without dead ends: 3994 [2023-11-26 12:01:32,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 292 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:01:32,661 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 91 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:32,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 419 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 12:01:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2023-11-26 12:01:33,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 2931. [2023-11-26 12:01:33,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2931 states, 2741 states have (on average 1.1597956950018242) internal successors, (3179), 2745 states have internal predecessors, (3179), 183 states have call successors, (183), 2 states have call predecessors, (183), 2 states have return successors, (183), 183 states have call predecessors, (183), 183 states have call successors, (183) [2023-11-26 12:01:33,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 3545 transitions. [2023-11-26 12:01:33,052 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 3545 transitions. Word has length 155 [2023-11-26 12:01:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:33,053 INFO L495 AbstractCegarLoop]: Abstraction has 2931 states and 3545 transitions. [2023-11-26 12:01:33,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-26 12:01:33,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 3545 transitions. [2023-11-26 12:01:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-26 12:01:33,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:33,058 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:33,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:33,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 12:01:33,265 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:33,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash -515246340, now seen corresponding path program 7 times [2023-11-26 12:01:33,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:33,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388581768] [2023-11-26 12:01:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:33,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:33,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:33,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385628721] [2023-11-26 12:01:33,286 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-26 12:01:33,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:33,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:33,288 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:33,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-26 12:01:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:33,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:01:33,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 235 proven. 92 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 12:01:33,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 195 proven. 92 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-26 12:01:33,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:33,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388581768] [2023-11-26 12:01:33,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:33,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385628721] [2023-11-26 12:01:33,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385628721] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:33,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:33,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2023-11-26 12:01:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086566783] [2023-11-26 12:01:33,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:33,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:01:33,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:33,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:01:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:33,794 INFO L87 Difference]: Start difference. First operand 2931 states and 3545 transitions. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2023-11-26 12:01:34,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:34,588 INFO L93 Difference]: Finished difference Result 5506 states and 6795 transitions. [2023-11-26 12:01:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:01:34,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 155 [2023-11-26 12:01:34,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:34,610 INFO L225 Difference]: With dead ends: 5506 [2023-11-26 12:01:34,610 INFO L226 Difference]: Without dead ends: 3978 [2023-11-26 12:01:34,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 296 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:01:34,615 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 78 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:34,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 272 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:01:34,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3978 states. [2023-11-26 12:01:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3978 to 3100. [2023-11-26 12:01:34,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 2899 states have (on average 1.1576405657123146) internal successors, (3356), 2903 states have internal predecessors, (3356), 194 states have call successors, (194), 2 states have call predecessors, (194), 2 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2023-11-26 12:01:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 3744 transitions. [2023-11-26 12:01:34,942 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 3744 transitions. Word has length 155 [2023-11-26 12:01:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:34,942 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 3744 transitions. [2023-11-26 12:01:34,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2023-11-26 12:01:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 3744 transitions. [2023-11-26 12:01:34,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-26 12:01:34,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:34,949 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:34,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-26 12:01:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-26 12:01:35,156 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:35,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1886262102, now seen corresponding path program 3 times [2023-11-26 12:01:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:35,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312594836] [2023-11-26 12:01:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:35,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:35,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:35,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135012478] [2023-11-26 12:01:35,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 12:01:35,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:35,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:35,172 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:35,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-26 12:01:35,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-26 12:01:35,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:35,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 12:01:35,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 18 proven. 347 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 12:01:35,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 18 proven. 347 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 12:01:35,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312594836] [2023-11-26 12:01:35,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135012478] [2023-11-26 12:01:35,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135012478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:35,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:35,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-26 12:01:35,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097490259] [2023-11-26 12:01:35,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:35,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 12:01:35,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:35,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 12:01:35,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-26 12:01:35,949 INFO L87 Difference]: Start difference. First operand 3100 states and 3744 transitions. Second operand has 23 states, 22 states have (on average 10.636363636363637) internal successors, (234), 23 states have internal predecessors, (234), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-26 12:01:37,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:37,825 INFO L93 Difference]: Finished difference Result 6751 states and 7989 transitions. [2023-11-26 12:01:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-26 12:01:37,825 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 10.636363636363637) internal successors, (234), 23 states have internal predecessors, (234), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 157 [2023-11-26 12:01:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:37,853 INFO L225 Difference]: With dead ends: 6751 [2023-11-26 12:01:37,853 INFO L226 Difference]: Without dead ends: 6750 [2023-11-26 12:01:37,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1051, Invalid=2371, Unknown=0, NotChecked=0, Total=3422 [2023-11-26 12:01:37,857 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 357 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:37,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 161 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 12:01:37,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6750 states. [2023-11-26 12:01:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6750 to 6554. [2023-11-26 12:01:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6554 states, 6166 states have (on average 1.1070385987674343) internal successors, (6826), 6170 states have internal predecessors, (6826), 381 states have call successors, (381), 2 states have call predecessors, (381), 2 states have return successors, (381), 381 states have call predecessors, (381), 381 states have call successors, (381) [2023-11-26 12:01:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6554 states to 6554 states and 7588 transitions. [2023-11-26 12:01:38,429 INFO L78 Accepts]: Start accepts. Automaton has 6554 states and 7588 transitions. Word has length 157 [2023-11-26 12:01:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:38,430 INFO L495 AbstractCegarLoop]: Abstraction has 6554 states and 7588 transitions. [2023-11-26 12:01:38,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 10.636363636363637) internal successors, (234), 23 states have internal predecessors, (234), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-26 12:01:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6554 states and 7588 transitions. [2023-11-26 12:01:38,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-26 12:01:38,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:38,435 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:38,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:38,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:38,641 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:38,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1131873023, now seen corresponding path program 8 times [2023-11-26 12:01:38,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:38,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026556278] [2023-11-26 12:01:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:38,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:38,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:38,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360071658] [2023-11-26 12:01:38,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:01:38,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:38,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:38,656 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:38,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-26 12:01:38,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:01:38,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:38,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 12:01:38,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-26 12:01:39,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:39,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026556278] [2023-11-26 12:01:39,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:39,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360071658] [2023-11-26 12:01:39,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360071658] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:39,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:39,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 12:01:39,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417087452] [2023-11-26 12:01:39,430 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:39,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:01:39,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:39,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:01:39,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:39,432 INFO L87 Difference]: Start difference. First operand 6554 states and 7588 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-26 12:01:40,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:40,418 INFO L93 Difference]: Finished difference Result 7044 states and 8174 transitions. [2023-11-26 12:01:40,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:01:40,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 175 [2023-11-26 12:01:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:40,437 INFO L225 Difference]: With dead ends: 7044 [2023-11-26 12:01:40,438 INFO L226 Difference]: Without dead ends: 7040 [2023-11-26 12:01:40,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:01:40,441 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 32 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:40,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 283 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:01:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7040 states. [2023-11-26 12:01:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7040 to 6439. [2023-11-26 12:01:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6439 states, 6057 states have (on average 1.106323262341093) internal successors, (6701), 6061 states have internal predecessors, (6701), 375 states have call successors, (375), 2 states have call predecessors, (375), 2 states have return successors, (375), 375 states have call predecessors, (375), 375 states have call successors, (375) [2023-11-26 12:01:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6439 states to 6439 states and 7451 transitions. [2023-11-26 12:01:41,087 INFO L78 Accepts]: Start accepts. Automaton has 6439 states and 7451 transitions. Word has length 175 [2023-11-26 12:01:41,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:41,088 INFO L495 AbstractCegarLoop]: Abstraction has 6439 states and 7451 transitions. [2023-11-26 12:01:41,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-26 12:01:41,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6439 states and 7451 transitions. [2023-11-26 12:01:41,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-26 12:01:41,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:41,093 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:41,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:41,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:41,301 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:41,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:41,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1708308629, now seen corresponding path program 9 times [2023-11-26 12:01:41,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:41,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636147326] [2023-11-26 12:01:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:41,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:41,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:41,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327007944] [2023-11-26 12:01:41,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 12:01:41,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:41,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:41,327 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:41,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-26 12:01:41,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-26 12:01:41,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:41,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 12:01:41,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-26 12:01:41,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-26 12:01:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636147326] [2023-11-26 12:01:42,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327007944] [2023-11-26 12:01:42,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327007944] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:42,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:42,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-26 12:01:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049341939] [2023-11-26 12:01:42,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:42,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 12:01:42,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:42,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 12:01:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:01:42,298 INFO L87 Difference]: Start difference. First operand 6439 states and 7451 transitions. Second operand has 16 states, 15 states have (on average 13.0) internal successors, (195), 16 states have internal predecessors, (195), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-26 12:01:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:45,647 INFO L93 Difference]: Finished difference Result 7351 states and 8558 transitions. [2023-11-26 12:01:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-26 12:01:45,648 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 13.0) internal successors, (195), 16 states have internal predecessors, (195), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 175 [2023-11-26 12:01:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:45,665 INFO L225 Difference]: With dead ends: 7351 [2023-11-26 12:01:45,665 INFO L226 Difference]: Without dead ends: 7316 [2023-11-26 12:01:45,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=849, Invalid=2691, Unknown=0, NotChecked=0, Total=3540 [2023-11-26 12:01:45,670 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 550 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:45,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 476 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 12:01:45,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7316 states. [2023-11-26 12:01:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7316 to 5958. [2023-11-26 12:01:46,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5958 states, 5608 states have (on average 1.0608059914407988) internal successors, (5949), 5611 states have internal predecessors, (5949), 344 states have call successors, (344), 2 states have call predecessors, (344), 2 states have return successors, (344), 344 states have call predecessors, (344), 344 states have call successors, (344) [2023-11-26 12:01:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5958 states to 5958 states and 6637 transitions. [2023-11-26 12:01:46,351 INFO L78 Accepts]: Start accepts. Automaton has 5958 states and 6637 transitions. Word has length 175 [2023-11-26 12:01:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:46,352 INFO L495 AbstractCegarLoop]: Abstraction has 5958 states and 6637 transitions. [2023-11-26 12:01:46,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 13.0) internal successors, (195), 16 states have internal predecessors, (195), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-26 12:01:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5958 states and 6637 transitions. [2023-11-26 12:01:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-26 12:01:46,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:46,358 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:46,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:46,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-26 12:01:46,566 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 12:01:46,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1824792118, now seen corresponding path program 2 times [2023-11-26 12:01:46,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:46,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233924284] [2023-11-26 12:01:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:46,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:46,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:01:46,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417332831] [2023-11-26 12:01:46,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:01:46,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:46,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:46,582 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:46,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef9b3fb-0631-43e3-b425-3de0796d9c63/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-26 12:01:46,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:01:46,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:01:46,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:01:46,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 12:01:46,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 12:01:47,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:47,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233924284] [2023-11-26 12:01:47,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:01:47,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417332831] [2023-11-26 12:01:47,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417332831] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:47,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:01:47,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-26 12:01:47,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639358914] [2023-11-26 12:01:47,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:47,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-26 12:01:47,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 12:01:47,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2023-11-26 12:01:47,310 INFO L87 Difference]: Start difference. First operand 5958 states and 6637 transitions. Second operand has 20 states, 19 states have (on average 14.473684210526315) internal successors, (275), 20 states have internal predecessors, (275), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2023-11-26 12:01:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:48,909 INFO L93 Difference]: Finished difference Result 8683 states and 9773 transitions. [2023-11-26 12:01:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-26 12:01:48,909 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 14.473684210526315) internal successors, (275), 20 states have internal predecessors, (275), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 190 [2023-11-26 12:01:48,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:48,931 INFO L225 Difference]: With dead ends: 8683 [2023-11-26 12:01:48,931 INFO L226 Difference]: Without dead ends: 8682 [2023-11-26 12:01:48,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2023-11-26 12:01:48,936 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 347 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:48,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 306 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 12:01:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states.