./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench/egcd-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/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_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/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_b8bf3790-0c8f-4981-a940-6a0b70935a6b/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 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:45:19,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:45:19,286 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:45:19,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:45:19,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:45:19,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:45:19,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:45:19,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:45:19,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:45:19,349 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:45:19,349 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:45:19,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:45:19,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:45:19,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:45:19,353 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:45:19,354 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:45:19,354 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:45:19,355 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:45:19,355 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:45:19,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:45:19,356 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:45:19,357 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:45:19,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:45:19,358 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:45:19,358 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:45:19,359 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:45:19,359 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:45:19,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:45:19,360 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:45:19,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:45:19,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:45:19,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:45:19,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:45:19,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:19,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:45:19,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:45:19,364 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:45:19,364 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:45:19,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:45:19,364 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:45:19,365 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:45:19,365 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:45:19,365 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:45:19,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:45:19,366 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_b8bf3790-0c8f-4981-a940-6a0b70935a6b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 [2023-11-26 10:45:19,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:45:19,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:45:19,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:45:19,746 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:45:19,747 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:45:19,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench/egcd-ll.c [2023-11-26 10:45:22,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:45:23,099 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:45:23,100 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/sv-benchmarks/c/nla-digbench/egcd-ll.c [2023-11-26 10:45:23,109 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/data/f51b0e3fa/be279f17876b42538bf766f592cf8669/FLAGffd328c7f [2023-11-26 10:45:23,125 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/data/f51b0e3fa/be279f17876b42538bf766f592cf8669 [2023-11-26 10:45:23,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:45:23,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:45:23,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:23,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:45:23,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:45:23,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6352dfd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23, skipping insertion in model container [2023-11-26 10:45:23,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,178 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:45:23,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:23,410 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:45:23,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:23,457 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:45:23,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23 WrapperNode [2023-11-26 10:45:23,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:23,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:23,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:45:23,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:45:23,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,491 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,519 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 117 [2023-11-26 10:45:23,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:23,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:45:23,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:45:23,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:45:23,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,559 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 10:45:23,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,572 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:45:23,601 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:45:23,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:45:23,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:45:23,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (1/1) ... [2023-11-26 10:45:23,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:23,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:23,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:45:23,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:45:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:45:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:45:23,721 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:45:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:45:23,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:45:23,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:45:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 10:45:23,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 10:45:23,811 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:45:23,814 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:45:24,346 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:45:24,392 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:45:24,400 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:45:24,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:24 BoogieIcfgContainer [2023-11-26 10:45:24,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:45:24,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:45:24,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:45:24,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:45:24,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:45:23" (1/3) ... [2023-11-26 10:45:24,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412a51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:24, skipping insertion in model container [2023-11-26 10:45:24,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:23" (2/3) ... [2023-11-26 10:45:24,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412a51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:24, skipping insertion in model container [2023-11-26 10:45:24,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:24" (3/3) ... [2023-11-26 10:45:24,412 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2023-11-26 10:45:24,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:45:24,428 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2023-11-26 10:45:24,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:45:24,489 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;@266462d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:45:24,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-11-26 10:45:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 68 states have (on average 1.911764705882353) internal successors, (130), 124 states have internal predecessors, (130), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 10:45:24,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 10:45:24,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:24,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:24,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:24,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:24,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1185362972, now seen corresponding path program 1 times [2023-11-26 10:45:24,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:24,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475265423] [2023-11-26 10:45:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:24,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 10:45:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:24,736 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 10:45:24,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475265423] [2023-11-26 10:45:24,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475265423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:24,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:24,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:24,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676295662] [2023-11-26 10:45:24,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:24,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:45:24,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:45:24,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:45:24,800 INFO L87 Difference]: Start difference. First operand has 136 states, 68 states have (on average 1.911764705882353) internal successors, (130), 124 states have internal predecessors, (130), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:45:24,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:24,857 INFO L93 Difference]: Finished difference Result 270 states and 302 transitions. [2023-11-26 10:45:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:45:24,860 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-11-26 10:45:24,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:24,868 INFO L225 Difference]: With dead ends: 270 [2023-11-26 10:45:24,869 INFO L226 Difference]: Without dead ends: 133 [2023-11-26 10:45:24,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 10:45:24,878 INFO L413 NwaCegarLoop]: 142 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, 142 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 10:45:24,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:45:24,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-26 10:45:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-26 10:45:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 67 states have (on average 1.8507462686567164) internal successors, (124), 122 states have internal predecessors, (124), 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 10:45:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2023-11-26 10:45:24,959 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 14 [2023-11-26 10:45:24,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:24,959 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2023-11-26 10:45:24,960 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:45:24,960 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2023-11-26 10:45:24,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 10:45:24,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:24,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:24,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:45:24,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:24,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:24,964 INFO L85 PathProgramCache]: Analyzing trace with hash -427042525, now seen corresponding path program 1 times [2023-11-26 10:45:24,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:24,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769553955] [2023-11-26 10:45:24,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:24,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:24,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:24,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514417047] [2023-11-26 10:45:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:24,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:24,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:25,007 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:25,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:45:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:25,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:45:25,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:25,165 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 10:45:25,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:25,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:25,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769553955] [2023-11-26 10:45:25,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:25,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514417047] [2023-11-26 10:45:25,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514417047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:25,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:25,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:25,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060703491] [2023-11-26 10:45:25,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:25,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:25,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:25,184 INFO L87 Difference]: Start difference. First operand 133 states and 140 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 10:45:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:25,522 INFO L93 Difference]: Finished difference Result 250 states and 264 transitions. [2023-11-26 10:45:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:25,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 10:45:25,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:25,527 INFO L225 Difference]: With dead ends: 250 [2023-11-26 10:45:25,527 INFO L226 Difference]: Without dead ends: 248 [2023-11-26 10:45:25,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:25,530 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 107 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:25,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 133 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:45:25,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-11-26 10:45:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 171. [2023-11-26 10:45:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 100 states have (on average 1.87) internal successors, (187), 155 states have internal predecessors, (187), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 10:45:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 213 transitions. [2023-11-26 10:45:25,556 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 213 transitions. Word has length 14 [2023-11-26 10:45:25,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:25,557 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 213 transitions. [2023-11-26 10:45:25,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 10:45:25,557 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 213 transitions. [2023-11-26 10:45:25,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 10:45:25,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:25,558 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:25,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:25,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 10:45:25,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:25,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash -353416339, now seen corresponding path program 1 times [2023-11-26 10:45:25,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:25,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323409378] [2023-11-26 10:45:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:25,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:25,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:25,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469653338] [2023-11-26 10:45:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:25,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:25,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:25,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:25,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:45:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:25,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:45:25,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:25,915 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 10:45:25,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:25,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:25,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323409378] [2023-11-26 10:45:25,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:25,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469653338] [2023-11-26 10:45:25,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469653338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:25,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:25,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:25,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501509950] [2023-11-26 10:45:25,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:25,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:25,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:25,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:25,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:25,923 INFO L87 Difference]: Start difference. First operand 171 states and 213 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 10:45:26,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:26,175 INFO L93 Difference]: Finished difference Result 248 states and 262 transitions. [2023-11-26 10:45:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:26,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 15 [2023-11-26 10:45:26,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:26,179 INFO L225 Difference]: With dead ends: 248 [2023-11-26 10:45:26,179 INFO L226 Difference]: Without dead ends: 246 [2023-11-26 10:45:26,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:26,182 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 104 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:26,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 135 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:45:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-26 10:45:26,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 172. [2023-11-26 10:45:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 101 states have (on average 1.8514851485148516) internal successors, (187), 156 states have internal predecessors, (187), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 10:45:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 213 transitions. [2023-11-26 10:45:26,202 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 213 transitions. Word has length 15 [2023-11-26 10:45:26,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:26,203 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 213 transitions. [2023-11-26 10:45:26,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 10:45:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 213 transitions. [2023-11-26 10:45:26,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-26 10:45:26,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:26,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:26,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 10:45:26,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 10:45:26,410 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:26,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:26,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1928995429, now seen corresponding path program 1 times [2023-11-26 10:45:26,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:26,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186683592] [2023-11-26 10:45:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:26,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:26,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698721181] [2023-11-26 10:45:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:26,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:26,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:26,428 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:26,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:45:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:26,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:45:26,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:26,490 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 10:45:26,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:26,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186683592] [2023-11-26 10:45:26,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:26,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698721181] [2023-11-26 10:45:26,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698721181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:26,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:26,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:26,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760076010] [2023-11-26 10:45:26,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:26,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:26,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:26,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:26,494 INFO L87 Difference]: Start difference. First operand 172 states and 213 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 10:45:26,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:26,662 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2023-11-26 10:45:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:26,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 10:45:26,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:26,666 INFO L225 Difference]: With dead ends: 289 [2023-11-26 10:45:26,666 INFO L226 Difference]: Without dead ends: 281 [2023-11-26 10:45:26,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:26,668 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 100 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:26,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 195 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:45:26,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-26 10:45:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 225. [2023-11-26 10:45:26,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 148 states have (on average 1.7972972972972974) internal successors, (266), 203 states have internal predecessors, (266), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:45:26,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 304 transitions. [2023-11-26 10:45:26,688 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 304 transitions. Word has length 16 [2023-11-26 10:45:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:26,689 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 304 transitions. [2023-11-26 10:45:26,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 10:45:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 304 transitions. [2023-11-26 10:45:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-26 10:45:26,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:26,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:26,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:26,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:26,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:26,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1661262937, now seen corresponding path program 1 times [2023-11-26 10:45:26,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:26,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671258850] [2023-11-26 10:45:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:26,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:26,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:26,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306307959] [2023-11-26 10:45:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:26,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:26,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:26,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:26,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:45:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:26,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:45:26,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:27,051 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 10:45:27,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:27,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:27,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671258850] [2023-11-26 10:45:27,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:27,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306307959] [2023-11-26 10:45:27,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306307959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:27,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:27,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:27,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827776215] [2023-11-26 10:45:27,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:27,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:27,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:27,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:27,056 INFO L87 Difference]: Start difference. First operand 225 states and 304 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 10:45:27,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:27,309 INFO L93 Difference]: Finished difference Result 281 states and 323 transitions. [2023-11-26 10:45:27,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:27,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 18 [2023-11-26 10:45:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:27,312 INFO L225 Difference]: With dead ends: 281 [2023-11-26 10:45:27,313 INFO L226 Difference]: Without dead ends: 274 [2023-11-26 10:45:27,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:27,314 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 90 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:27,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 115 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:45:27,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-26 10:45:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 229. [2023-11-26 10:45:27,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 152 states have (on average 1.75) internal successors, (266), 207 states have internal predecessors, (266), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:45:27,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 304 transitions. [2023-11-26 10:45:27,355 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 304 transitions. Word has length 18 [2023-11-26 10:45:27,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:27,355 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 304 transitions. [2023-11-26 10:45:27,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 10:45:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 304 transitions. [2023-11-26 10:45:27,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-26 10:45:27,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:27,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:27,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:27,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:27,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:27,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:27,564 INFO L85 PathProgramCache]: Analyzing trace with hash 40456561, now seen corresponding path program 1 times [2023-11-26 10:45:27,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:27,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929124839] [2023-11-26 10:45:27,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:27,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:27,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:27,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564074620] [2023-11-26 10:45:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:27,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:27,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:27,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:27,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:45:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:27,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:45:27,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:27,679 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 10:45:27,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929124839] [2023-11-26 10:45:27,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564074620] [2023-11-26 10:45:27,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564074620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:27,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:27,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:27,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294704351] [2023-11-26 10:45:27,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:27,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:27,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:27,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:27,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:27,684 INFO L87 Difference]: Start difference. First operand 229 states and 304 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 10:45:28,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:28,352 INFO L93 Difference]: Finished difference Result 274 states and 315 transitions. [2023-11-26 10:45:28,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:28,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 19 [2023-11-26 10:45:28,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:28,355 INFO L225 Difference]: With dead ends: 274 [2023-11-26 10:45:28,355 INFO L226 Difference]: Without dead ends: 269 [2023-11-26 10:45:28,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 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 10:45:28,357 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 171 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:28,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 163 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:45:28,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-26 10:45:28,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 190. [2023-11-26 10:45:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 118 states have (on average 1.7372881355932204) internal successors, (205), 173 states have internal predecessors, (205), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-26 10:45:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 233 transitions. [2023-11-26 10:45:28,371 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 233 transitions. Word has length 19 [2023-11-26 10:45:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:28,372 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 233 transitions. [2023-11-26 10:45:28,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 10:45:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 233 transitions. [2023-11-26 10:45:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-26 10:45:28,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:28,373 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] [2023-11-26 10:45:28,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:28,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:28,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:28,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1818360847, now seen corresponding path program 1 times [2023-11-26 10:45:28,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:28,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287999906] [2023-11-26 10:45:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:28,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:28,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:28,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75607226] [2023-11-26 10:45:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:28,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:28,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:28,594 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:28,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:45:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:28,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:45:28,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:28,796 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 10:45:28,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:28,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287999906] [2023-11-26 10:45:28,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75607226] [2023-11-26 10:45:28,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75607226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:28,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:28,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:45:28,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004855882] [2023-11-26 10:45:28,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:28,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:45:28,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:45:28,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:28,800 INFO L87 Difference]: Start difference. First operand 190 states and 233 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:45:29,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:29,899 INFO L93 Difference]: Finished difference Result 366 states and 454 transitions. [2023-11-26 10:45:29,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:45:29,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-11-26 10:45:29,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:29,904 INFO L225 Difference]: With dead ends: 366 [2023-11-26 10:45:29,904 INFO L226 Difference]: Without dead ends: 364 [2023-11-26 10:45:29,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:45:29,906 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 331 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:29,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 271 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:45:29,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-26 10:45:29,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 260. [2023-11-26 10:45:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 180 states have (on average 1.7444444444444445) internal successors, (314), 235 states have internal predecessors, (314), 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 10:45:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 358 transitions. [2023-11-26 10:45:29,935 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 358 transitions. Word has length 25 [2023-11-26 10:45:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:29,936 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 358 transitions. [2023-11-26 10:45:29,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:45:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 358 transitions. [2023-11-26 10:45:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 10:45:29,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:29,937 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] [2023-11-26 10:45:29,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:30,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:30,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:30,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:30,144 INFO L85 PathProgramCache]: Analyzing trace with hash 534611470, now seen corresponding path program 1 times [2023-11-26 10:45:30,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:30,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124094819] [2023-11-26 10:45:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:30,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:30,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:30,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620550208] [2023-11-26 10:45:30,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:30,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:30,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:30,157 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:30,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:45:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:30,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:45:30,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:30,375 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 10:45:30,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:30,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:30,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124094819] [2023-11-26 10:45:30,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:30,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620550208] [2023-11-26 10:45:30,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620550208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:30,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:30,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:45:30,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833704836] [2023-11-26 10:45:30,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:30,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:45:30,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:30,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:45:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:30,380 INFO L87 Difference]: Start difference. First operand 260 states and 358 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:45:31,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:31,856 INFO L93 Difference]: Finished difference Result 366 states and 450 transitions. [2023-11-26 10:45:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:45:31,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-11-26 10:45:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:31,859 INFO L225 Difference]: With dead ends: 366 [2023-11-26 10:45:31,860 INFO L226 Difference]: Without dead ends: 364 [2023-11-26 10:45:31,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:45:31,861 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 335 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:31,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 271 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 10:45:31,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-26 10:45:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 262. [2023-11-26 10:45:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 182 states have (on average 1.7252747252747254) internal successors, (314), 237 states have internal predecessors, (314), 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 10:45:31,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 358 transitions. [2023-11-26 10:45:31,883 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 358 transitions. Word has length 26 [2023-11-26 10:45:31,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:31,883 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 358 transitions. [2023-11-26 10:45:31,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:45:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 358 transitions. [2023-11-26 10:45:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 10:45:31,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:31,885 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] [2023-11-26 10:45:31,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:32,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:32,090 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:32,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash -606913551, now seen corresponding path program 1 times [2023-11-26 10:45:32,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:32,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322966316] [2023-11-26 10:45:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:32,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:32,110 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:32,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102517749] [2023-11-26 10:45:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:32,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:32,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:32,114 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:32,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:45:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:32,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:45:32,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:32,263 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 10:45:32,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:32,442 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 10:45:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322966316] [2023-11-26 10:45:32,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:32,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102517749] [2023-11-26 10:45:32,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102517749] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:45:32,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:45:32,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 10:45:32,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227974676] [2023-11-26 10:45:32,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:32,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:32,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:32,451 INFO L87 Difference]: Start difference. First operand 262 states and 358 transitions. Second operand has 9 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 10:45:33,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:33,283 INFO L93 Difference]: Finished difference Result 376 states and 459 transitions. [2023-11-26 10:45:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:45:33,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2023-11-26 10:45:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:33,286 INFO L225 Difference]: With dead ends: 376 [2023-11-26 10:45:33,286 INFO L226 Difference]: Without dead ends: 374 [2023-11-26 10:45:33,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:45:33,288 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 717 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:33,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 286 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:45:33,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-26 10:45:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 272. [2023-11-26 10:45:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 192 states have (on average 1.6979166666666667) internal successors, (326), 246 states have internal predecessors, (326), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-26 10:45:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 372 transitions. [2023-11-26 10:45:33,311 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 372 transitions. Word has length 27 [2023-11-26 10:45:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:33,312 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 372 transitions. [2023-11-26 10:45:33,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 10:45:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 372 transitions. [2023-11-26 10:45:33,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-26 10:45:33,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:33,313 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] [2023-11-26 10:45:33,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:33,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:33,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:33,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:33,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1634450832, now seen corresponding path program 1 times [2023-11-26 10:45:33,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:33,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942566395] [2023-11-26 10:45:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:33,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:33,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124396682] [2023-11-26 10:45:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:33,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:33,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:33,532 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:33,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:45:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:33,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:45:33,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:33,647 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 10:45:33,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:33,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:33,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942566395] [2023-11-26 10:45:33,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:33,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124396682] [2023-11-26 10:45:33,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124396682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:33,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:33,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178310860] [2023-11-26 10:45:33,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:33,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:33,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:33,652 INFO L87 Difference]: Start difference. First operand 272 states and 372 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 10:45:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:33,875 INFO L93 Difference]: Finished difference Result 366 states and 452 transitions. [2023-11-26 10:45:33,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:33,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 28 [2023-11-26 10:45:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:33,878 INFO L225 Difference]: With dead ends: 366 [2023-11-26 10:45:33,878 INFO L226 Difference]: Without dead ends: 364 [2023-11-26 10:45:33,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 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 10:45:33,880 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 209 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:33,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 148 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:45:33,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-26 10:45:33,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 272. [2023-11-26 10:45:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 192 states have (on average 1.6770833333333333) internal successors, (322), 246 states have internal predecessors, (322), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-26 10:45:33,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 368 transitions. [2023-11-26 10:45:33,907 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 368 transitions. Word has length 28 [2023-11-26 10:45:33,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:33,907 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 368 transitions. [2023-11-26 10:45:33,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 10:45:33,908 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 368 transitions. [2023-11-26 10:45:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 10:45:33,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:33,909 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] [2023-11-26 10:45:33,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:34,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:45:34,118 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:34,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:34,118 INFO L85 PathProgramCache]: Analyzing trace with hash 871631827, now seen corresponding path program 1 times [2023-11-26 10:45:34,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:34,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834399061] [2023-11-26 10:45:34,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:34,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:34,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:34,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983289649] [2023-11-26 10:45:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:34,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:34,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:34,131 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:34,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 10:45:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:34,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:45:34,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:34,348 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 10:45:34,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:34,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:34,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834399061] [2023-11-26 10:45:34,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:34,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983289649] [2023-11-26 10:45:34,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983289649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:34,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:34,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 10:45:34,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088717975] [2023-11-26 10:45:34,456 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:34,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:45:34,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:34,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:45:34,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:34,458 INFO L87 Difference]: Start difference. First operand 272 states and 368 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 10:45:35,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:35,441 INFO L93 Difference]: Finished difference Result 364 states and 448 transitions. [2023-11-26 10:45:35,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:45:35,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 29 [2023-11-26 10:45:35,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:35,444 INFO L225 Difference]: With dead ends: 364 [2023-11-26 10:45:35,444 INFO L226 Difference]: Without dead ends: 358 [2023-11-26 10:45:35,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:45:35,446 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 204 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:35,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 211 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:45:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-26 10:45:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 280. [2023-11-26 10:45:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 199 states have (on average 1.6482412060301508) internal successors, (328), 253 states have internal predecessors, (328), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 376 transitions. [2023-11-26 10:45:35,468 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 376 transitions. Word has length 29 [2023-11-26 10:45:35,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:35,468 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 376 transitions. [2023-11-26 10:45:35,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 10:45:35,469 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 376 transitions. [2023-11-26 10:45:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 10:45:35,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:35,470 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] [2023-11-26 10:45:35,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:35,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 10:45:35,676 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:35,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:35,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1250782930, now seen corresponding path program 1 times [2023-11-26 10:45:35,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:35,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484889695] [2023-11-26 10:45:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:35,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:35,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:35,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482941263] [2023-11-26 10:45:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:35,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:35,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:35,689 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:35,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 10:45:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:35,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:45:35,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:35,792 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 10:45:35,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:35,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:35,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484889695] [2023-11-26 10:45:35,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:35,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482941263] [2023-11-26 10:45:35,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482941263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:35,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:35,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:35,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319931342] [2023-11-26 10:45:35,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:35,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:35,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:35,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:35,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:35,796 INFO L87 Difference]: Start difference. First operand 280 states and 376 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 10:45:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:36,447 INFO L93 Difference]: Finished difference Result 364 states and 448 transitions. [2023-11-26 10:45:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:36,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 30 [2023-11-26 10:45:36,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:36,450 INFO L225 Difference]: With dead ends: 364 [2023-11-26 10:45:36,450 INFO L226 Difference]: Without dead ends: 362 [2023-11-26 10:45:36,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:36,451 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 97 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:36,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 207 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:45:36,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-26 10:45:36,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 281. [2023-11-26 10:45:36,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 200 states have (on average 1.63) internal successors, (326), 254 states have internal predecessors, (326), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 374 transitions. [2023-11-26 10:45:36,477 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 374 transitions. Word has length 30 [2023-11-26 10:45:36,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:36,477 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 374 transitions. [2023-11-26 10:45:36,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 10:45:36,478 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 374 transitions. [2023-11-26 10:45:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 10:45:36,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:36,479 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:36,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:36,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 10:45:36,690 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:36,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2117852475, now seen corresponding path program 1 times [2023-11-26 10:45:36,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:36,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492388185] [2023-11-26 10:45:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:36,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:36,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:36,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625790515] [2023-11-26 10:45:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:36,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:36,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:36,706 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:36,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 10:45:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:36,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:45:36,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:45:36,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:36,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:36,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492388185] [2023-11-26 10:45:36,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:36,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625790515] [2023-11-26 10:45:36,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625790515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:36,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:36,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:45:36,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472319672] [2023-11-26 10:45:36,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:36,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:45:36,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:36,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:45:36,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:45:36,861 INFO L87 Difference]: Start difference. First operand 281 states and 374 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:45:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:37,486 INFO L93 Difference]: Finished difference Result 326 states and 393 transitions. [2023-11-26 10:45:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:45:37,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-26 10:45:37,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:37,489 INFO L225 Difference]: With dead ends: 326 [2023-11-26 10:45:37,489 INFO L226 Difference]: Without dead ends: 324 [2023-11-26 10:45:37,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:37,490 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 272 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:37,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 284 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:45:37,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-11-26 10:45:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 282. [2023-11-26 10:45:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 201 states have (on average 1.6169154228855722) internal successors, (325), 255 states have internal predecessors, (325), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 373 transitions. [2023-11-26 10:45:37,519 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 373 transitions. Word has length 38 [2023-11-26 10:45:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:37,519 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 373 transitions. [2023-11-26 10:45:37,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:45:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 373 transitions. [2023-11-26 10:45:37,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 10:45:37,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:37,522 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:37,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:37,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:37,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:37,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:37,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1228917363, now seen corresponding path program 1 times [2023-11-26 10:45:37,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:37,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722675861] [2023-11-26 10:45:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:37,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:37,739 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:37,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052064535] [2023-11-26 10:45:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:37,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:37,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:37,741 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:37,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 10:45:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:37,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:45:37,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 10:45:37,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:37,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722675861] [2023-11-26 10:45:37,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:37,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052064535] [2023-11-26 10:45:37,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052064535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:37,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:37,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:37,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511085398] [2023-11-26 10:45:37,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:37,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:37,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:37,882 INFO L87 Difference]: Start difference. First operand 282 states and 373 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 10:45:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:38,160 INFO L93 Difference]: Finished difference Result 324 states and 390 transitions. [2023-11-26 10:45:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:38,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 39 [2023-11-26 10:45:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:38,163 INFO L225 Difference]: With dead ends: 324 [2023-11-26 10:45:38,163 INFO L226 Difference]: Without dead ends: 322 [2023-11-26 10:45:38,163 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 10:45:38,164 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 264 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:38,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 142 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:45:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-26 10:45:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 283. [2023-11-26 10:45:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 202 states have (on average 1.603960396039604) internal successors, (324), 256 states have internal predecessors, (324), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:38,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 372 transitions. [2023-11-26 10:45:38,188 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 372 transitions. Word has length 39 [2023-11-26 10:45:38,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:38,188 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 372 transitions. [2023-11-26 10:45:38,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 10:45:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 372 transitions. [2023-11-26 10:45:38,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-26 10:45:38,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:38,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:38,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-26 10:45:38,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 10:45:38,396 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:38,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash -558267331, now seen corresponding path program 1 times [2023-11-26 10:45:38,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:38,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125023291] [2023-11-26 10:45:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:38,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:38,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:38,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534828422] [2023-11-26 10:45:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:38,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:38,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:38,410 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:38,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 10:45:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:38,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:45:38,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:45:38,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:38,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:38,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125023291] [2023-11-26 10:45:38,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:38,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534828422] [2023-11-26 10:45:38,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534828422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:38,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:38,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:45:38,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087988985] [2023-11-26 10:45:38,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:38,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:45:38,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:45:38,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:45:38,614 INFO L87 Difference]: Start difference. First operand 283 states and 372 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:45:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:39,370 INFO L93 Difference]: Finished difference Result 316 states and 379 transitions. [2023-11-26 10:45:39,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:45:39,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-11-26 10:45:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:39,372 INFO L225 Difference]: With dead ends: 316 [2023-11-26 10:45:39,373 INFO L226 Difference]: Without dead ends: 314 [2023-11-26 10:45:39,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:39,374 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 252 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:39,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 230 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:45:39,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-11-26 10:45:39,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 284. [2023-11-26 10:45:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 203 states have (on average 1.5911330049261083) internal successors, (323), 257 states have internal predecessors, (323), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 371 transitions. [2023-11-26 10:45:39,394 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 371 transitions. Word has length 40 [2023-11-26 10:45:39,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:39,395 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 371 transitions. [2023-11-26 10:45:39,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:45:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 371 transitions. [2023-11-26 10:45:39,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-26 10:45:39,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:39,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:39,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:39,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 10:45:39,602 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:39,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash -126417995, now seen corresponding path program 1 times [2023-11-26 10:45:39,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:39,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761528979] [2023-11-26 10:45:39,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:39,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:39,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:39,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645984320] [2023-11-26 10:45:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:39,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:39,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:39,624 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:39,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 10:45:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:39,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:45:39,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:45:39,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:40,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:40,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761528979] [2023-11-26 10:45:40,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:40,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645984320] [2023-11-26 10:45:40,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645984320] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:40,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:40,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 10:45:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595860530] [2023-11-26 10:45:40,142 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:40,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:45:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:45:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:45:40,144 INFO L87 Difference]: Start difference. First operand 284 states and 371 transitions. Second operand has 8 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 10:45:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:43,148 INFO L93 Difference]: Finished difference Result 314 states and 376 transitions. [2023-11-26 10:45:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:45:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2023-11-26 10:45:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:43,151 INFO L225 Difference]: With dead ends: 314 [2023-11-26 10:45:43,151 INFO L226 Difference]: Without dead ends: 312 [2023-11-26 10:45:43,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:45:43,152 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 262 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:43,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 301 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-26 10:45:43,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-26 10:45:43,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 285. [2023-11-26 10:45:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 204 states have (on average 1.5784313725490196) internal successors, (322), 258 states have internal predecessors, (322), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 370 transitions. [2023-11-26 10:45:43,172 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 370 transitions. Word has length 41 [2023-11-26 10:45:43,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:43,173 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 370 transitions. [2023-11-26 10:45:43,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 10:45:43,173 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 370 transitions. [2023-11-26 10:45:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 10:45:43,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:43,174 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:43,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:43,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 10:45:43,381 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:43,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:43,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1379107115, now seen corresponding path program 1 times [2023-11-26 10:45:43,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:43,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437195739] [2023-11-26 10:45:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:43,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:43,401 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:43,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597362668] [2023-11-26 10:45:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:43,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:43,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:43,405 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:43,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 10:45:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:43,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:45:43,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 10:45:43,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:43,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:43,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437195739] [2023-11-26 10:45:43,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:43,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597362668] [2023-11-26 10:45:43,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597362668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:43,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:43,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:43,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862898682] [2023-11-26 10:45:43,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:43,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:43,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:43,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:43,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:43,477 INFO L87 Difference]: Start difference. First operand 285 states and 370 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:45:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:43,518 INFO L93 Difference]: Finished difference Result 285 states and 370 transitions. [2023-11-26 10:45:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:43,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 48 [2023-11-26 10:45:43,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:43,521 INFO L225 Difference]: With dead ends: 285 [2023-11-26 10:45:43,521 INFO L226 Difference]: Without dead ends: 283 [2023-11-26 10:45:43,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:43,522 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 51 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:43,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 195 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:45:43,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-26 10:45:43,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-26 10:45:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 204 states have (on average 1.5490196078431373) internal successors, (316), 256 states have internal predecessors, (316), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 364 transitions. [2023-11-26 10:45:43,541 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 364 transitions. Word has length 48 [2023-11-26 10:45:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:43,542 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 364 transitions. [2023-11-26 10:45:43,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:45:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 364 transitions. [2023-11-26 10:45:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 10:45:43,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:43,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:43,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:43,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 10:45:43,751 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:43,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:43,753 INFO L85 PathProgramCache]: Analyzing trace with hash 197352520, now seen corresponding path program 1 times [2023-11-26 10:45:43,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:43,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090422592] [2023-11-26 10:45:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:43,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:43,771 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:43,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061790006] [2023-11-26 10:45:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:43,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:43,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:43,773 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:43,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 10:45:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:43,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:45:43,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 10:45:43,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:43,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:43,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090422592] [2023-11-26 10:45:43,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:43,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061790006] [2023-11-26 10:45:43,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061790006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:43,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:43,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:43,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269655267] [2023-11-26 10:45:43,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:43,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:43,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:43,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:43,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:43,840 INFO L87 Difference]: Start difference. First operand 283 states and 364 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:45:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:43,885 INFO L93 Difference]: Finished difference Result 283 states and 364 transitions. [2023-11-26 10:45:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:43,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2023-11-26 10:45:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:43,888 INFO L225 Difference]: With dead ends: 283 [2023-11-26 10:45:43,889 INFO L226 Difference]: Without dead ends: 281 [2023-11-26 10:45:43,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:43,890 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 49 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:43,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 194 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:45:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-26 10:45:43,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-26 10:45:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 204 states have (on average 1.5098039215686274) internal successors, (308), 254 states have internal predecessors, (308), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 356 transitions. [2023-11-26 10:45:43,914 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 356 transitions. Word has length 49 [2023-11-26 10:45:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:43,915 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 356 transitions. [2023-11-26 10:45:43,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:45:43,915 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 356 transitions. [2023-11-26 10:45:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 10:45:43,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:43,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:43,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:44,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 10:45:44,126 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:44,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1823002659, now seen corresponding path program 1 times [2023-11-26 10:45:44,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:44,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87358247] [2023-11-26 10:45:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:44,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:44,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277841187] [2023-11-26 10:45:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:44,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:44,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:44,140 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:44,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 10:45:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:44,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:45:44,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 10:45:44,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:44,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:44,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87358247] [2023-11-26 10:45:44,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:44,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277841187] [2023-11-26 10:45:44,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277841187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:44,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:44,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:44,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797115148] [2023-11-26 10:45:44,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:44,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:44,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:44,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:44,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:44,351 INFO L87 Difference]: Start difference. First operand 281 states and 356 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:44,598 INFO L93 Difference]: Finished difference Result 309 states and 384 transitions. [2023-11-26 10:45:44,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:44,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2023-11-26 10:45:44,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:44,601 INFO L225 Difference]: With dead ends: 309 [2023-11-26 10:45:44,601 INFO L226 Difference]: Without dead ends: 308 [2023-11-26 10:45:44,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 10:45:44,602 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 202 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:44,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 149 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:45:44,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-26 10:45:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 281. [2023-11-26 10:45:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 204 states have (on average 1.5049019607843137) internal successors, (307), 254 states have internal predecessors, (307), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 355 transitions. [2023-11-26 10:45:44,632 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 355 transitions. Word has length 50 [2023-11-26 10:45:44,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:44,633 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 355 transitions. [2023-11-26 10:45:44,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 355 transitions. [2023-11-26 10:45:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 10:45:44,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:44,639 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:44,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:44,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:44,845 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:44,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:44,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1822988757, now seen corresponding path program 1 times [2023-11-26 10:45:44,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:44,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377946013] [2023-11-26 10:45:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:44,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:44,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:44,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83934208] [2023-11-26 10:45:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:44,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:44,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:44,856 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:44,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 10:45:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:44,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:45:44,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 10:45:45,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:45,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:45,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377946013] [2023-11-26 10:45:45,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:45,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83934208] [2023-11-26 10:45:45,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83934208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:45,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:45,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:45,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424122353] [2023-11-26 10:45:45,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:45,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:45,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:45,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:45,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:45,043 INFO L87 Difference]: Start difference. First operand 281 states and 355 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:45,286 INFO L93 Difference]: Finished difference Result 308 states and 383 transitions. [2023-11-26 10:45:45,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:45,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2023-11-26 10:45:45,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:45,289 INFO L225 Difference]: With dead ends: 308 [2023-11-26 10:45:45,289 INFO L226 Difference]: Without dead ends: 307 [2023-11-26 10:45:45,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 10:45:45,290 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 200 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:45,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 150 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:45:45,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-26 10:45:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 283. [2023-11-26 10:45:45,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 206 states have (on average 1.5) internal successors, (309), 256 states have internal predecessors, (309), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 357 transitions. [2023-11-26 10:45:45,312 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 357 transitions. Word has length 50 [2023-11-26 10:45:45,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:45,313 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 357 transitions. [2023-11-26 10:45:45,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:45,313 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 357 transitions. [2023-11-26 10:45:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 10:45:45,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:45,314 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:45,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:45,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:45,520 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:45,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash 678507692, now seen corresponding path program 1 times [2023-11-26 10:45:45,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:45,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502166005] [2023-11-26 10:45:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:45,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:45,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:45,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772298518] [2023-11-26 10:45:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:45,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:45,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:45,531 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:45,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 10:45:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:45,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:45:45,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 10:45:45,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:45,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502166005] [2023-11-26 10:45:45,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772298518] [2023-11-26 10:45:45,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772298518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:45,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:45,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:45,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118819889] [2023-11-26 10:45:45,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:45,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:45,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:45,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:45,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:45,690 INFO L87 Difference]: Start difference. First operand 283 states and 357 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:46,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:46,237 INFO L93 Difference]: Finished difference Result 306 states and 360 transitions. [2023-11-26 10:45:46,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:46,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2023-11-26 10:45:46,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:46,240 INFO L225 Difference]: With dead ends: 306 [2023-11-26 10:45:46,240 INFO L226 Difference]: Without dead ends: 304 [2023-11-26 10:45:46,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:46,241 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 52 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:46,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 145 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:45:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-26 10:45:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 283. [2023-11-26 10:45:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 206 states have (on average 1.4854368932038835) internal successors, (306), 256 states have internal predecessors, (306), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 354 transitions. [2023-11-26 10:45:46,299 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 354 transitions. Word has length 51 [2023-11-26 10:45:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:46,299 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 354 transitions. [2023-11-26 10:45:46,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 354 transitions. [2023-11-26 10:45:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 10:45:46,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:46,301 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:46,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:46,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:46,507 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:46,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:46,508 INFO L85 PathProgramCache]: Analyzing trace with hash -789133362, now seen corresponding path program 1 times [2023-11-26 10:45:46,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:46,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326211857] [2023-11-26 10:45:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:46,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:46,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:46,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763884456] [2023-11-26 10:45:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:46,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:46,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:46,519 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:46,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 10:45:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:46,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:45:46,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 10:45:46,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:46,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:46,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326211857] [2023-11-26 10:45:46,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:46,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763884456] [2023-11-26 10:45:46,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763884456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:46,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:46,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:46,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720045423] [2023-11-26 10:45:46,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:46,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:46,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:46,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:46,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:46,689 INFO L87 Difference]: Start difference. First operand 283 states and 354 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:46,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:46,814 INFO L93 Difference]: Finished difference Result 283 states and 354 transitions. [2023-11-26 10:45:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:46,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2023-11-26 10:45:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:46,817 INFO L225 Difference]: With dead ends: 283 [2023-11-26 10:45:46,817 INFO L226 Difference]: Without dead ends: 281 [2023-11-26 10:45:46,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:46,818 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 82 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:46,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 75 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:45:46,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-26 10:45:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-26 10:45:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 206 states have (on average 1.4660194174757282) internal successors, (302), 254 states have internal predecessors, (302), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 350 transitions. [2023-11-26 10:45:46,840 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 350 transitions. Word has length 53 [2023-11-26 10:45:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:46,841 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 350 transitions. [2023-11-26 10:45:46,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 350 transitions. [2023-11-26 10:45:46,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 10:45:46,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:46,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:46,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:47,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:47,048 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:47,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:47,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1203301746, now seen corresponding path program 1 times [2023-11-26 10:45:47,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:47,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065103600] [2023-11-26 10:45:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:47,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:47,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:47,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593193619] [2023-11-26 10:45:47,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:47,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:47,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:47,064 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:47,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 10:45:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:47,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:45:47,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 10:45:47,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:47,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:47,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065103600] [2023-11-26 10:45:47,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:47,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593193619] [2023-11-26 10:45:47,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593193619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:47,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:47,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:45:47,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795804652] [2023-11-26 10:45:47,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:47,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:47,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:47,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:47,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:47,227 INFO L87 Difference]: Start difference. First operand 281 states and 350 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:47,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:47,601 INFO L93 Difference]: Finished difference Result 358 states and 416 transitions. [2023-11-26 10:45:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:47,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2023-11-26 10:45:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:47,604 INFO L225 Difference]: With dead ends: 358 [2023-11-26 10:45:47,605 INFO L226 Difference]: Without dead ends: 356 [2023-11-26 10:45:47,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:47,606 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 65 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:47,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 133 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:45:47,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-26 10:45:47,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 289. [2023-11-26 10:45:47,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 214 states have (on average 1.4579439252336448) internal successors, (312), 262 states have internal predecessors, (312), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:47,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 360 transitions. [2023-11-26 10:45:47,628 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 360 transitions. Word has length 53 [2023-11-26 10:45:47,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:47,629 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 360 transitions. [2023-11-26 10:45:47,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:47,629 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 360 transitions. [2023-11-26 10:45:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 10:45:47,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:47,630 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:47,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:47,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:47,837 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:47,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:47,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1579104809, now seen corresponding path program 1 times [2023-11-26 10:45:47,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:47,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911824919] [2023-11-26 10:45:47,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:47,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:47,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:47,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822982919] [2023-11-26 10:45:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:47,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:47,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:47,856 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:47,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-26 10:45:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:47,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:45:47,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 10:45:48,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:48,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:48,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911824919] [2023-11-26 10:45:48,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:48,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822982919] [2023-11-26 10:45:48,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822982919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:48,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:48,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-11-26 10:45:48,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111647544] [2023-11-26 10:45:48,289 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:48,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:48,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:48,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:48,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:45:48,290 INFO L87 Difference]: Start difference. First operand 289 states and 360 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:48,487 INFO L93 Difference]: Finished difference Result 354 states and 411 transitions. [2023-11-26 10:45:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:48,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2023-11-26 10:45:48,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:48,490 INFO L225 Difference]: With dead ends: 354 [2023-11-26 10:45:48,490 INFO L226 Difference]: Without dead ends: 352 [2023-11-26 10:45:48,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:45:48,491 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 120 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:48,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 124 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:45:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-26 10:45:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 290. [2023-11-26 10:45:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 215 states have (on average 1.4511627906976745) internal successors, (312), 263 states have internal predecessors, (312), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 360 transitions. [2023-11-26 10:45:48,513 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 360 transitions. Word has length 56 [2023-11-26 10:45:48,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:48,513 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 360 transitions. [2023-11-26 10:45:48,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 360 transitions. [2023-11-26 10:45:48,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 10:45:48,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:48,515 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:48,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:48,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-26 10:45:48,720 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:48,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:48,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1707608871, now seen corresponding path program 1 times [2023-11-26 10:45:48,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:48,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851278656] [2023-11-26 10:45:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:48,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:48,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:48,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638522322] [2023-11-26 10:45:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:48,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:48,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:48,731 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:48,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-26 10:45:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:48,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:45:48,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 10:45:48,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:49,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851278656] [2023-11-26 10:45:49,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:49,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638522322] [2023-11-26 10:45:49,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638522322] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:49,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:49,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-11-26 10:45:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489071201] [2023-11-26 10:45:49,082 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:49,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:49,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:45:49,084 INFO L87 Difference]: Start difference. First operand 290 states and 360 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:49,554 INFO L93 Difference]: Finished difference Result 352 states and 409 transitions. [2023-11-26 10:45:49,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:49,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2023-11-26 10:45:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:49,557 INFO L225 Difference]: With dead ends: 352 [2023-11-26 10:45:49,557 INFO L226 Difference]: Without dead ends: 350 [2023-11-26 10:45:49,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:45:49,558 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 58 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:49,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 169 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:45:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-26 10:45:49,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 291. [2023-11-26 10:45:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 216 states have (on average 1.4444444444444444) internal successors, (312), 264 states have internal predecessors, (312), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 360 transitions. [2023-11-26 10:45:49,599 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 360 transitions. Word has length 57 [2023-11-26 10:45:49,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:49,599 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 360 transitions. [2023-11-26 10:45:49,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 360 transitions. [2023-11-26 10:45:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 10:45:49,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:49,601 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:49,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:49,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 10:45:49,807 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:49,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1594887195, now seen corresponding path program 1 times [2023-11-26 10:45:49,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:49,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813997119] [2023-11-26 10:45:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:49,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:49,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957527355] [2023-11-26 10:45:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:49,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:49,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:49,818 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:49,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-26 10:45:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:49,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:45:49,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 10:45:49,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 10:45:50,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:50,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813997119] [2023-11-26 10:45:50,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:50,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957527355] [2023-11-26 10:45:50,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957527355] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:45:50,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:45:50,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 10:45:50,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698581000] [2023-11-26 10:45:50,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:50,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:45:50,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:50,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:45:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:45:50,076 INFO L87 Difference]: Start difference. First operand 291 states and 360 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-26 10:45:50,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:50,544 INFO L93 Difference]: Finished difference Result 308 states and 370 transitions. [2023-11-26 10:45:50,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:45:50,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 61 [2023-11-26 10:45:50,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:50,550 INFO L225 Difference]: With dead ends: 308 [2023-11-26 10:45:50,552 INFO L226 Difference]: Without dead ends: 307 [2023-11-26 10:45:50,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:45:50,553 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 279 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:50,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 106 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:45:50,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-26 10:45:50,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 290. [2023-11-26 10:45:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 216 states have (on average 1.4305555555555556) internal successors, (309), 263 states have internal predecessors, (309), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 357 transitions. [2023-11-26 10:45:50,584 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 357 transitions. Word has length 61 [2023-11-26 10:45:50,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:50,584 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 357 transitions. [2023-11-26 10:45:50,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-26 10:45:50,585 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 357 transitions. [2023-11-26 10:45:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 10:45:50,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:50,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:50,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:50,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 10:45:50,793 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:50,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1783271853, now seen corresponding path program 1 times [2023-11-26 10:45:50,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:50,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667928653] [2023-11-26 10:45:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:50,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:50,803 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:50,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272265409] [2023-11-26 10:45:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:50,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:50,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:50,805 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:50,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-26 10:45:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:50,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:45:50,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 10:45:50,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:50,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:50,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667928653] [2023-11-26 10:45:50,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:50,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272265409] [2023-11-26 10:45:50,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272265409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:50,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:50,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:50,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591018053] [2023-11-26 10:45:50,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:50,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:50,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:50,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:50,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:50,942 INFO L87 Difference]: Start difference. First operand 290 states and 357 transitions. Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:51,507 INFO L93 Difference]: Finished difference Result 350 states and 405 transitions. [2023-11-26 10:45:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:51,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2023-11-26 10:45:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:51,512 INFO L225 Difference]: With dead ends: 350 [2023-11-26 10:45:51,512 INFO L226 Difference]: Without dead ends: 349 [2023-11-26 10:45:51,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 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 10:45:51,513 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 80 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:51,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 196 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:45:51,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-26 10:45:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 290. [2023-11-26 10:45:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 216 states have (on average 1.4259259259259258) internal successors, (308), 263 states have internal predecessors, (308), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 356 transitions. [2023-11-26 10:45:51,555 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 356 transitions. Word has length 60 [2023-11-26 10:45:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:51,555 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 356 transitions. [2023-11-26 10:45:51,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 356 transitions. [2023-11-26 10:45:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 10:45:51,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:51,557 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:51,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:51,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 10:45:51,762 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:51,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:51,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2098104649, now seen corresponding path program 1 times [2023-11-26 10:45:51,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:51,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127883948] [2023-11-26 10:45:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:51,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:51,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:51,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393774714] [2023-11-26 10:45:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:51,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:51,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:51,772 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:51,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-26 10:45:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:45:51,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 10:45:53,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:53,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:53,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127883948] [2023-11-26 10:45:53,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:53,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393774714] [2023-11-26 10:45:53,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393774714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:53,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:53,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:45:53,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037313647] [2023-11-26 10:45:53,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:53,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:45:53,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:53,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:45:53,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:53,849 INFO L87 Difference]: Start difference. First operand 290 states and 356 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:45:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:57,825 INFO L93 Difference]: Finished difference Result 309 states and 359 transitions. [2023-11-26 10:45:57,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:45:57,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 62 [2023-11-26 10:45:57,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:57,827 INFO L225 Difference]: With dead ends: 309 [2023-11-26 10:45:57,827 INFO L226 Difference]: Without dead ends: 307 [2023-11-26 10:45:57,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 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 10:45:57,828 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 160 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:57,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 257 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-26 10:45:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-26 10:45:57,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 289. [2023-11-26 10:45:57,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 215 states have (on average 1.4186046511627908) internal successors, (305), 262 states have internal predecessors, (305), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 353 transitions. [2023-11-26 10:45:57,854 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 353 transitions. Word has length 62 [2023-11-26 10:45:57,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:57,854 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 353 transitions. [2023-11-26 10:45:57,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:45:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 353 transitions. [2023-11-26 10:45:57,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 10:45:57,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:57,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:57,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:58,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 10:45:58,061 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:58,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash -553147349, now seen corresponding path program 1 times [2023-11-26 10:45:58,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:58,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611165706] [2023-11-26 10:45:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:58,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:58,074 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:58,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440656486] [2023-11-26 10:45:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:58,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:58,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:58,076 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:58,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-26 10:45:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:58,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:45:58,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 10:45:58,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:45:58,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:58,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611165706] [2023-11-26 10:45:58,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:58,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440656486] [2023-11-26 10:45:58,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440656486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:58,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:58,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:58,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906180414] [2023-11-26 10:45:58,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:58,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:58,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:58,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:58,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:58,206 INFO L87 Difference]: Start difference. First operand 289 states and 353 transitions. Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:58,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:58,632 INFO L93 Difference]: Finished difference Result 349 states and 401 transitions. [2023-11-26 10:45:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:45:58,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-11-26 10:45:58,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:58,635 INFO L225 Difference]: With dead ends: 349 [2023-11-26 10:45:58,635 INFO L226 Difference]: Without dead ends: 346 [2023-11-26 10:45:58,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 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 10:45:58,637 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 130 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:58,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 156 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:45:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-11-26 10:45:58,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 292. [2023-11-26 10:45:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 218 states have (on average 1.4128440366972477) internal successors, (308), 265 states have internal predecessors, (308), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 356 transitions. [2023-11-26 10:45:58,662 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 356 transitions. Word has length 61 [2023-11-26 10:45:58,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:58,663 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 356 transitions. [2023-11-26 10:45:58,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:45:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 356 transitions. [2023-11-26 10:45:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-26 10:45:58,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:58,664 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:58,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-26 10:45:58,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-26 10:45:58,870 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:45:58,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:58,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1530351447, now seen corresponding path program 1 times [2023-11-26 10:45:58,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:58,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343915855] [2023-11-26 10:45:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:58,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:58,877 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:45:58,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560641269] [2023-11-26 10:45:58,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:58,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:45:58,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:58,879 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:45:58,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-26 10:45:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:58,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:45:58,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:59,283 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 10:45:59,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:45:59,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:59,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343915855] [2023-11-26 10:45:59,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:45:59,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560641269] [2023-11-26 10:45:59,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560641269] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:45:59,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:45:59,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 10:45:59,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020762679] [2023-11-26 10:45:59,424 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:45:59,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:45:59,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:59,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:45:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:45:59,426 INFO L87 Difference]: Start difference. First operand 292 states and 356 transitions. Second operand has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:00,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:00,742 INFO L93 Difference]: Finished difference Result 529 states and 620 transitions. [2023-11-26 10:46:00,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:46:00,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 67 [2023-11-26 10:46:00,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:00,746 INFO L225 Difference]: With dead ends: 529 [2023-11-26 10:46:00,746 INFO L226 Difference]: Without dead ends: 525 [2023-11-26 10:46:00,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:46:00,748 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 414 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:00,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 275 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 10:46:00,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-11-26 10:46:00,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 381. [2023-11-26 10:46:00,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 297 states have (on average 1.4478114478114479) internal successors, (430), 344 states have internal predecessors, (430), 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 10:46:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 498 transitions. [2023-11-26 10:46:00,800 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 498 transitions. Word has length 67 [2023-11-26 10:46:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:00,801 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 498 transitions. [2023-11-26 10:46:00,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 498 transitions. [2023-11-26 10:46:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 10:46:00,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:00,802 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:00,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:01,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:01,008 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:46:01,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash 196254662, now seen corresponding path program 1 times [2023-11-26 10:46:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:01,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305361697] [2023-11-26 10:46:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:01,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:01,016 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:01,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375260323] [2023-11-26 10:46:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:01,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:01,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:01,018 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:01,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-26 10:46:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:01,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:46:01,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 10:46:01,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305361697] [2023-11-26 10:46:01,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:01,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375260323] [2023-11-26 10:46:01,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375260323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:01,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:01,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 10:46:01,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937810646] [2023-11-26 10:46:01,739 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:01,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:01,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:01,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:01,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:46:01,740 INFO L87 Difference]: Start difference. First operand 381 states and 498 transitions. Second operand has 8 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:02,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:02,596 INFO L93 Difference]: Finished difference Result 423 states and 526 transitions. [2023-11-26 10:46:02,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:46:02,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2023-11-26 10:46:02,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:02,599 INFO L225 Difference]: With dead ends: 423 [2023-11-26 10:46:02,599 INFO L226 Difference]: Without dead ends: 419 [2023-11-26 10:46:02,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:46:02,601 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 173 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:02,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 382 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:46:02,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-26 10:46:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 377. [2023-11-26 10:46:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 297 states have (on average 1.404040404040404) internal successors, (417), 340 states have internal predecessors, (417), 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 10:46:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 485 transitions. [2023-11-26 10:46:02,653 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 485 transitions. Word has length 68 [2023-11-26 10:46:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:02,653 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 485 transitions. [2023-11-26 10:46:02,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 485 transitions. [2023-11-26 10:46:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 10:46:02,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:02,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:02,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:02,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:02,862 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:46:02,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1788927289, now seen corresponding path program 1 times [2023-11-26 10:46:02,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:02,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847572108] [2023-11-26 10:46:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:02,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:02,871 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:02,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294845247] [2023-11-26 10:46:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:02,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:02,873 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:02,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-26 10:46:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:02,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 10:46:02,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 10:46:03,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:03,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:03,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847572108] [2023-11-26 10:46:03,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:03,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294845247] [2023-11-26 10:46:03,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294845247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:03,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:03,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 10:46:03,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523667085] [2023-11-26 10:46:03,545 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:03,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:03,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:03,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:03,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:46:03,547 INFO L87 Difference]: Start difference. First operand 377 states and 485 transitions. Second operand has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:04,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:04,648 INFO L93 Difference]: Finished difference Result 570 states and 708 transitions. [2023-11-26 10:46:04,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:46:04,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 69 [2023-11-26 10:46:04,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:04,652 INFO L225 Difference]: With dead ends: 570 [2023-11-26 10:46:04,652 INFO L226 Difference]: Without dead ends: 564 [2023-11-26 10:46:04,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:46:04,653 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 515 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:04,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 289 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:46:04,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-11-26 10:46:04,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 470. [2023-11-26 10:46:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 380 states have (on average 1.4526315789473685) internal successors, (552), 423 states have internal predecessors, (552), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-26 10:46:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 640 transitions. [2023-11-26 10:46:04,703 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 640 transitions. Word has length 69 [2023-11-26 10:46:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:04,704 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 640 transitions. [2023-11-26 10:46:04,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 640 transitions. [2023-11-26 10:46:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-26 10:46:04,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:04,705 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:04,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:04,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-26 10:46:04,911 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:46:04,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:04,912 INFO L85 PathProgramCache]: Analyzing trace with hash -377828824, now seen corresponding path program 1 times [2023-11-26 10:46:04,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:04,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63606758] [2023-11-26 10:46:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:04,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:04,923 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:04,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291093404] [2023-11-26 10:46:04,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:04,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:04,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:04,925 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:04,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-26 10:46:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:04,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 10:46:04,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 10:46:05,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:05,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:05,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63606758] [2023-11-26 10:46:05,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:05,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291093404] [2023-11-26 10:46:05,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291093404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:05,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:05,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 10:46:05,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058376861] [2023-11-26 10:46:05,901 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:05,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:05,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:05,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:05,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:46:05,903 INFO L87 Difference]: Start difference. First operand 470 states and 640 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:07,759 INFO L93 Difference]: Finished difference Result 607 states and 777 transitions. [2023-11-26 10:46:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:46:07,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 70 [2023-11-26 10:46:07,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:07,768 INFO L225 Difference]: With dead ends: 607 [2023-11-26 10:46:07,769 INFO L226 Difference]: Without dead ends: 605 [2023-11-26 10:46:07,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:46:07,770 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 556 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:07,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 257 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 10:46:07,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-11-26 10:46:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 505. [2023-11-26 10:46:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 411 states have (on average 1.4476885644768855) internal successors, (595), 454 states have internal predecessors, (595), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-26 10:46:07,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 691 transitions. [2023-11-26 10:46:07,819 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 691 transitions. Word has length 70 [2023-11-26 10:46:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:07,819 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 691 transitions. [2023-11-26 10:46:07,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 691 transitions. [2023-11-26 10:46:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 10:46:07,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:07,821 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:07,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-26 10:46:08,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-26 10:46:08,027 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:46:08,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:08,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1172208411, now seen corresponding path program 1 times [2023-11-26 10:46:08,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:08,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63282087] [2023-11-26 10:46:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:08,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:08,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:08,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386729796] [2023-11-26 10:46:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:08,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:08,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:08,036 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:08,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-26 10:46:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:08,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 10:46:08,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 10:46:08,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:08,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:08,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63282087] [2023-11-26 10:46:08,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:08,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386729796] [2023-11-26 10:46:08,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386729796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:08,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:08,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 10:46:08,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641899723] [2023-11-26 10:46:08,727 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:08,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:08,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:08,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:46:08,729 INFO L87 Difference]: Start difference. First operand 505 states and 691 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:11,581 INFO L93 Difference]: Finished difference Result 596 states and 745 transitions. [2023-11-26 10:46:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:46:11,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 71 [2023-11-26 10:46:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:11,585 INFO L225 Difference]: With dead ends: 596 [2023-11-26 10:46:11,585 INFO L226 Difference]: Without dead ends: 592 [2023-11-26 10:46:11,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:46:11,586 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 475 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:11,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 281 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-26 10:46:11,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2023-11-26 10:46:11,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 446. [2023-11-26 10:46:11,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 359 states have (on average 1.4456824512534818) internal successors, (519), 402 states have internal predecessors, (519), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-26 10:46:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 601 transitions. [2023-11-26 10:46:11,631 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 601 transitions. Word has length 71 [2023-11-26 10:46:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:11,631 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 601 transitions. [2023-11-26 10:46:11,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 601 transitions. [2023-11-26 10:46:11,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 10:46:11,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:11,633 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:11,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:11,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-26 10:46:11,839 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:46:11,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:11,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1978722442, now seen corresponding path program 1 times [2023-11-26 10:46:11,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:11,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013498345] [2023-11-26 10:46:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:11,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:11,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:11,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119603678] [2023-11-26 10:46:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:11,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:11,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:11,858 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:11,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-26 10:46:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:11,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:46:11,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 10:46:12,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:12,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:12,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013498345] [2023-11-26 10:46:12,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:12,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119603678] [2023-11-26 10:46:12,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119603678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:12,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:12,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 10:46:12,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600721503] [2023-11-26 10:46:12,456 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:12,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:12,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:12,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:12,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:46:12,457 INFO L87 Difference]: Start difference. First operand 446 states and 601 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:13,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:13,732 INFO L93 Difference]: Finished difference Result 509 states and 646 transitions. [2023-11-26 10:46:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:46:13,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 72 [2023-11-26 10:46:13,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:13,735 INFO L225 Difference]: With dead ends: 509 [2023-11-26 10:46:13,736 INFO L226 Difference]: Without dead ends: 505 [2023-11-26 10:46:13,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:46:13,737 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 321 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:13,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 315 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 10:46:13,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-11-26 10:46:13,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 413. [2023-11-26 10:46:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 333 states have (on average 1.4054054054054055) internal successors, (468), 373 states have internal predecessors, (468), 37 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 10:46:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 542 transitions. [2023-11-26 10:46:13,776 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 542 transitions. Word has length 72 [2023-11-26 10:46:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:13,777 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 542 transitions. [2023-11-26 10:46:13,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:46:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 542 transitions. [2023-11-26 10:46:13,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-26 10:46:13,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:13,779 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:13,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:13,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:13,985 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:46:13,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:13,985 INFO L85 PathProgramCache]: Analyzing trace with hash -328157505, now seen corresponding path program 1 times [2023-11-26 10:46:13,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:13,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937064580] [2023-11-26 10:46:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:13,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:13,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:13,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183515549] [2023-11-26 10:46:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:13,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:13,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:13,999 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:14,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-26 10:46:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:46:14,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-26 10:46:14,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:14,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937064580] [2023-11-26 10:46:14,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:46:14,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183515549] [2023-11-26 10:46:14,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183515549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:14,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:14,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 10:46:14,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790125826] [2023-11-26 10:46:14,530 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:14,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:14,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:14,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:46:14,532 INFO L87 Difference]: Start difference. First operand 413 states and 542 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 10:46:15,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:15,404 INFO L93 Difference]: Finished difference Result 689 states and 911 transitions. [2023-11-26 10:46:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:46:15,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 78 [2023-11-26 10:46:15,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:15,409 INFO L225 Difference]: With dead ends: 689 [2023-11-26 10:46:15,409 INFO L226 Difference]: Without dead ends: 687 [2023-11-26 10:46:15,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:46:15,410 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 492 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:15,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 253 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:46:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-11-26 10:46:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 616. [2023-11-26 10:46:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 513 states have (on average 1.4366471734892787) internal successors, (737), 553 states have internal predecessors, (737), 60 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-26 10:46:15,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 857 transitions. [2023-11-26 10:46:15,472 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 857 transitions. Word has length 78 [2023-11-26 10:46:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:15,473 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 857 transitions. [2023-11-26 10:46:15,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 10:46:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 857 transitions. [2023-11-26 10:46:15,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 10:46:15,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:15,474 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:15,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:15,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:15,680 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 10:46:15,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1582947989, now seen corresponding path program 1 times [2023-11-26 10:46:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:15,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121297569] [2023-11-26 10:46:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:15,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:15,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:46:15,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538962330] [2023-11-26 10:46:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:15,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:15,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:15,693 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:15,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bf3790-0c8f-4981-a940-6a0b70935a6b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-26 10:46:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 10:46:15,752 INFO L285 TraceCheckSpWp]: Computing forward predicates...