./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/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_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/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_7523e919-de79-4f94-ac41-0b49b87ea462/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 e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:57:10,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:57:10,682 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:57:10,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:57:10,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:57:10,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:57:10,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:57:10,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:57:10,732 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:57:10,738 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:57:10,738 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:57:10,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:57:10,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:57:10,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:57:10,742 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:57:10,742 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:57:10,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:57:10,743 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:57:10,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:57:10,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:57:10,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:57:10,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:57:10,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:57:10,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:57:10,746 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:57:10,747 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:57:10,747 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:57:10,748 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:57:10,748 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:57:10,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:57:10,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:57:10,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:57:10,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:57:10,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:10,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:57:10,753 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:57:10,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:57:10,753 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:57:10,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:57:10,754 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:57:10,754 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:57:10,755 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:57:10,755 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:57:10,755 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:57:10,756 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_7523e919-de79-4f94-ac41-0b49b87ea462/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 [2023-11-26 11:57:11,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:57:11,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:57:11,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:57:11,090 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:57:11,090 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:57:11,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2023-11-26 11:57:14,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:57:14,460 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:57:14,460 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2023-11-26 11:57:14,469 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/data/2672ea37e/4392bd8f8b7d4161a6bf02fcd5a54b1b/FLAGa1797438c [2023-11-26 11:57:14,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/data/2672ea37e/4392bd8f8b7d4161a6bf02fcd5a54b1b [2023-11-26 11:57:14,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:57:14,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:57:14,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:14,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:57:14,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:57:14,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1531d7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14, skipping insertion in model container [2023-11-26 11:57:14,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,526 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:57:14,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:14,736 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:57:14,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:14,781 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:57:14,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14 WrapperNode [2023-11-26 11:57:14,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:14,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:14,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:57:14,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:57:14,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,835 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 119 [2023-11-26 11:57:14,835 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:14,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:57:14,836 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:57:14,836 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:57:14,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,868 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:57:14,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,874 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:57:14,885 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:57:14,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:57:14,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:57:14,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:14,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:14,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:57:14,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:57:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:57:14,973 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:57:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:57:14,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:57:14,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:57:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:57:14,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:57:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:57:15,035 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:57:15,038 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:57:15,632 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:57:15,676 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:57:15,676 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:57:15,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:15 BoogieIcfgContainer [2023-11-26 11:57:15,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:57:15,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:57:15,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:57:15,684 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:57:15,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:57:14" (1/3) ... [2023-11-26 11:57:15,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec69387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:15, skipping insertion in model container [2023-11-26 11:57:15,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (2/3) ... [2023-11-26 11:57:15,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec69387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:15, skipping insertion in model container [2023-11-26 11:57:15,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:15" (3/3) ... [2023-11-26 11:57:15,688 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2023-11-26 11:57:15,705 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:57:15,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2023-11-26 11:57:15,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:57:15,769 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;@5c8a1c5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:57:15,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-11-26 11:57:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 69 states have (on average 1.8985507246376812) internal successors, (131), 125 states have internal predecessors, (131), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-26 11:57:15,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-26 11:57:15,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:15,784 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:15,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:15,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:15,791 INFO L85 PathProgramCache]: Analyzing trace with hash 38741639, now seen corresponding path program 1 times [2023-11-26 11:57:15,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:15,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545886831] [2023-11-26 11:57:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:15,907 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:15,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612962468] [2023-11-26 11:57:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:15,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:15,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:15,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:15,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:57:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:16,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:57:16,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:57:16,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:16,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:16,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545886831] [2023-11-26 11:57:16,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:16,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612962468] [2023-11-26 11:57:16,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612962468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:16,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:16,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:16,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745673731] [2023-11-26 11:57:16,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:16,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:16,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:16,183 INFO L87 Difference]: Start difference. First operand has 139 states, 69 states have (on average 1.8985507246376812) internal successors, (131), 125 states have internal predecessors, (131), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:57:16,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:16,583 INFO L93 Difference]: Finished difference Result 393 states and 451 transitions. [2023-11-26 11:57:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:16,587 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2023-11-26 11:57:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:16,610 INFO L225 Difference]: With dead ends: 393 [2023-11-26 11:57:16,610 INFO L226 Difference]: Without dead ends: 251 [2023-11-26 11:57:16,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:16,625 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 108 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:16,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 147 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:57:16,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-26 11:57:16,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 174. [2023-11-26 11:57:16,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 101 states have (on average 1.8613861386138615) internal successors, (188), 156 states have internal predecessors, (188), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:57:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 218 transitions. [2023-11-26 11:57:16,702 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 218 transitions. Word has length 25 [2023-11-26 11:57:16,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:16,704 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 218 transitions. [2023-11-26 11:57:16,704 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:57:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 218 transitions. [2023-11-26 11:57:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 11:57:16,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:16,708 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:16,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:16,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:57:16,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:16,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1200990860, now seen corresponding path program 1 times [2023-11-26 11:57:16,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:16,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628990960] [2023-11-26 11:57:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:16,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:16,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:16,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048987146] [2023-11-26 11:57:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:16,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:16,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:16,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:16,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:57:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:17,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:57:17,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:57:17,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:17,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:17,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628990960] [2023-11-26 11:57:17,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:17,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048987146] [2023-11-26 11:57:17,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048987146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:17,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:17,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:17,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850152970] [2023-11-26 11:57:17,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:17,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:17,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:17,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:17,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:17,070 INFO L87 Difference]: Start difference. First operand 174 states and 218 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:57:17,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:17,318 INFO L93 Difference]: Finished difference Result 251 states and 267 transitions. [2023-11-26 11:57:17,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:17,319 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2023-11-26 11:57:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:17,324 INFO L225 Difference]: With dead ends: 251 [2023-11-26 11:57:17,325 INFO L226 Difference]: Without dead ends: 249 [2023-11-26 11:57:17,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:17,328 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 104 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 145 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 11:57:17,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 145 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-26 11:57:17,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 175. [2023-11-26 11:57:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 102 states have (on average 1.8431372549019607) internal successors, (188), 157 states have internal predecessors, (188), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:57:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 218 transitions. [2023-11-26 11:57:17,375 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 218 transitions. Word has length 26 [2023-11-26 11:57:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:17,379 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 218 transitions. [2023-11-26 11:57:17,381 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:57:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 218 transitions. [2023-11-26 11:57:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 11:57:17,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:17,383 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:17,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 11:57:17,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:17,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:17,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:17,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1423988951, now seen corresponding path program 1 times [2023-11-26 11:57:17,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:17,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179575653] [2023-11-26 11:57:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:17,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:17,609 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:17,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584271216] [2023-11-26 11:57:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:17,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:17,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:17,612 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:17,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:57:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:17,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:17,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:57:17,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:17,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:17,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179575653] [2023-11-26 11:57:17,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:17,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584271216] [2023-11-26 11:57:17,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584271216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:17,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:17,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721773136] [2023-11-26 11:57:17,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:17,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:17,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:17,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:17,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:17,704 INFO L87 Difference]: Start difference. First operand 175 states and 218 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:57:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:17,883 INFO L93 Difference]: Finished difference Result 292 states and 342 transitions. [2023-11-26 11:57:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:17,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2023-11-26 11:57:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:17,887 INFO L225 Difference]: With dead ends: 292 [2023-11-26 11:57:17,887 INFO L226 Difference]: Without dead ends: 284 [2023-11-26 11:57:17,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:17,890 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 100 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:17,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 203 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:17,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-26 11:57:17,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 228. [2023-11-26 11:57:17,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 149 states have (on average 1.7919463087248322) internal successors, (267), 204 states have internal predecessors, (267), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:57:17,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 309 transitions. [2023-11-26 11:57:17,911 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 309 transitions. Word has length 27 [2023-11-26 11:57:17,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:17,912 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 309 transitions. [2023-11-26 11:57:17,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:57:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 309 transitions. [2023-11-26 11:57:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 11:57:17,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:17,914 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:17,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:18,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:18,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:18,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:18,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1641187275, now seen corresponding path program 1 times [2023-11-26 11:57:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:18,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586817651] [2023-11-26 11:57:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:18,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:18,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:18,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958278826] [2023-11-26 11:57:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:18,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:18,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:18,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:18,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:57:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:18,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:57:18,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:57:18,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:18,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:18,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586817651] [2023-11-26 11:57:18,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:18,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958278826] [2023-11-26 11:57:18,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958278826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:18,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525732663] [2023-11-26 11:57:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:18,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:18,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:18,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:18,337 INFO L87 Difference]: Start difference. First operand 228 states and 309 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:57:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:18,588 INFO L93 Difference]: Finished difference Result 284 states and 328 transitions. [2023-11-26 11:57:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:18,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-11-26 11:57:18,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:18,591 INFO L225 Difference]: With dead ends: 284 [2023-11-26 11:57:18,591 INFO L226 Difference]: Without dead ends: 277 [2023-11-26 11:57:18,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:18,592 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 90 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 125 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 11:57:18,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 125 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:18,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-26 11:57:18,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 232. [2023-11-26 11:57:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 208 states have internal predecessors, (267), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:57:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 309 transitions. [2023-11-26 11:57:18,629 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 309 transitions. Word has length 29 [2023-11-26 11:57:18,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:18,629 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 309 transitions. [2023-11-26 11:57:18,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:57:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 309 transitions. [2023-11-26 11:57:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 11:57:18,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:18,631 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:18,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:18,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:18,831 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:18,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:18,832 INFO L85 PathProgramCache]: Analyzing trace with hash -662801968, now seen corresponding path program 1 times [2023-11-26 11:57:18,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:18,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171605813] [2023-11-26 11:57:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:18,849 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:18,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913062261] [2023-11-26 11:57:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:18,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:18,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:18,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:18,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:57:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:18,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:57:18,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:57:18,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:18,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171605813] [2023-11-26 11:57:18,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913062261] [2023-11-26 11:57:18,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913062261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:18,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:18,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:18,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899660282] [2023-11-26 11:57:18,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:18,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:18,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:18,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:18,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:18,990 INFO L87 Difference]: Start difference. First operand 232 states and 309 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:57:19,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:19,309 INFO L93 Difference]: Finished difference Result 277 states and 320 transitions. [2023-11-26 11:57:19,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:19,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2023-11-26 11:57:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:19,312 INFO L225 Difference]: With dead ends: 277 [2023-11-26 11:57:19,312 INFO L226 Difference]: Without dead ends: 272 [2023-11-26 11:57:19,313 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 11:57:19,314 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 171 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:19,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 173 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:57:19,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-26 11:57:19,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 193. [2023-11-26 11:57:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 119 states have (on average 1.73109243697479) internal successors, (206), 174 states have internal predecessors, (206), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 11:57:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 238 transitions. [2023-11-26 11:57:19,328 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 238 transitions. Word has length 30 [2023-11-26 11:57:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:19,329 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 238 transitions. [2023-11-26 11:57:19,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:57:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 238 transitions. [2023-11-26 11:57:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:57:19,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:19,331 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:19,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:19,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:19,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:19,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash 330085702, now seen corresponding path program 1 times [2023-11-26 11:57:19,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:19,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194602628] [2023-11-26 11:57:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:19,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:19,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:19,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115783026] [2023-11-26 11:57:19,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:19,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:19,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:19,565 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:19,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:57:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:19,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:57:19,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:57:19,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:20,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:20,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194602628] [2023-11-26 11:57:20,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:20,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115783026] [2023-11-26 11:57:20,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115783026] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:20,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:20,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-26 11:57:20,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748030970] [2023-11-26 11:57:20,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:20,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:20,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:20,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:20,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:20,052 INFO L87 Difference]: Start difference. First operand 193 states and 238 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:57:24,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-26 11:57:28,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-26 11:57:34,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-26 11:57:36,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:36,794 INFO L93 Difference]: Finished difference Result 218 states and 266 transitions. [2023-11-26 11:57:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:36,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-11-26 11:57:36,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:36,797 INFO L225 Difference]: With dead ends: 218 [2023-11-26 11:57:36,797 INFO L226 Difference]: Without dead ends: 216 [2023-11-26 11:57:36,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:57:36,799 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 236 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 14 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:36,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 171 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 166 Invalid, 9 Unknown, 0 Unchecked, 16.6s Time] [2023-11-26 11:57:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-26 11:57:36,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2023-11-26 11:57:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 135 states have (on average 1.674074074074074) internal successors, (226), 189 states have internal predecessors, (226), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:57:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 262 transitions. [2023-11-26 11:57:36,821 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 262 transitions. Word has length 36 [2023-11-26 11:57:36,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:36,821 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 262 transitions. [2023-11-26 11:57:36,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:57:36,822 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 262 transitions. [2023-11-26 11:57:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-26 11:57:36,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:36,823 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:36,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:37,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:57:37,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:37,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1642722234, now seen corresponding path program 1 times [2023-11-26 11:57:37,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:37,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24801388] [2023-11-26 11:57:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:37,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:37,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816700922] [2023-11-26 11:57:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:37,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:37,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:37,047 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:37,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:57:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:37,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:57:37,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:57:37,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:37,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:37,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24801388] [2023-11-26 11:57:37,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:37,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816700922] [2023-11-26 11:57:37,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816700922] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:37,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:37,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-26 11:57:37,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751089758] [2023-11-26 11:57:37,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:37,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:37,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:37,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:37,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:37,479 INFO L87 Difference]: Start difference. First operand 210 states and 262 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:57:40,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:40,186 INFO L93 Difference]: Finished difference Result 219 states and 266 transitions. [2023-11-26 11:57:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:40,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-11-26 11:57:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:40,189 INFO L225 Difference]: With dead ends: 219 [2023-11-26 11:57:40,189 INFO L226 Difference]: Without dead ends: 217 [2023-11-26 11:57:40,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:57:40,191 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 233 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:40,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 236 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-26 11:57:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-26 11:57:40,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2023-11-26 11:57:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 137 states have (on average 1.6496350364963503) internal successors, (226), 190 states have internal predecessors, (226), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:57:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 262 transitions. [2023-11-26 11:57:40,215 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 262 transitions. Word has length 37 [2023-11-26 11:57:40,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:40,215 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 262 transitions. [2023-11-26 11:57:40,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:57:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 262 transitions. [2023-11-26 11:57:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 11:57:40,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:40,217 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:40,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:40,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:57:40,424 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:40,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:40,424 INFO L85 PathProgramCache]: Analyzing trace with hash -615218232, now seen corresponding path program 1 times [2023-11-26 11:57:40,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:40,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282167590] [2023-11-26 11:57:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:40,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:40,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:40,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611559963] [2023-11-26 11:57:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:40,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:40,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:40,492 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:40,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:57:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:40,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:40,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:40,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:40,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:40,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282167590] [2023-11-26 11:57:40,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:40,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611559963] [2023-11-26 11:57:40,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611559963] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:40,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:40,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:57:40,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120214890] [2023-11-26 11:57:40,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:40,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:57:40,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:40,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:57:40,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:40,797 INFO L87 Difference]: Start difference. First operand 211 states and 262 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-26 11:57:41,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:41,715 INFO L93 Difference]: Finished difference Result 375 states and 458 transitions. [2023-11-26 11:57:41,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:41,716 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 38 [2023-11-26 11:57:41,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:41,719 INFO L225 Difference]: With dead ends: 375 [2023-11-26 11:57:41,719 INFO L226 Difference]: Without dead ends: 373 [2023-11-26 11:57:41,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:57:41,720 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 518 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:41,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 218 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:57:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-26 11:57:41,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 212. [2023-11-26 11:57:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 139 states have (on average 1.6258992805755397) internal successors, (226), 191 states have internal predecessors, (226), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:57:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 262 transitions. [2023-11-26 11:57:41,745 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 262 transitions. Word has length 38 [2023-11-26 11:57:41,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:41,745 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 262 transitions. [2023-11-26 11:57:41,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-26 11:57:41,746 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 262 transitions. [2023-11-26 11:57:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 11:57:41,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:41,747 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:41,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:41,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:41,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:41,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1891895940, now seen corresponding path program 1 times [2023-11-26 11:57:41,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:41,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228941455] [2023-11-26 11:57:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:41,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:41,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:41,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948400367] [2023-11-26 11:57:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:41,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:41,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:41,970 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:41,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:57:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:42,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:42,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:42,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:42,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228941455] [2023-11-26 11:57:42,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:42,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948400367] [2023-11-26 11:57:42,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948400367] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:42,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:42,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:57:42,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720091831] [2023-11-26 11:57:42,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:42,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:57:42,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:57:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:42,304 INFO L87 Difference]: Start difference. First operand 212 states and 262 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 11:57:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:42,765 INFO L93 Difference]: Finished difference Result 373 states and 453 transitions. [2023-11-26 11:57:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:42,765 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 39 [2023-11-26 11:57:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:42,768 INFO L225 Difference]: With dead ends: 373 [2023-11-26 11:57:42,768 INFO L226 Difference]: Without dead ends: 371 [2023-11-26 11:57:42,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:57:42,770 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 306 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:42,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 385 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:57:42,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-26 11:57:42,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 213. [2023-11-26 11:57:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 141 states have (on average 1.6028368794326242) internal successors, (226), 192 states have internal predecessors, (226), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:57:42,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 262 transitions. [2023-11-26 11:57:42,793 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 262 transitions. Word has length 39 [2023-11-26 11:57:42,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:42,794 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 262 transitions. [2023-11-26 11:57:42,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 11:57:42,794 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 262 transitions. [2023-11-26 11:57:42,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-26 11:57:42,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:42,795 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:42,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:43,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:43,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:43,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:43,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1480768074, now seen corresponding path program 1 times [2023-11-26 11:57:43,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:43,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138705555] [2023-11-26 11:57:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:43,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:43,016 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:43,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810385662] [2023-11-26 11:57:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:43,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:43,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:43,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:43,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:57:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:43,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 11:57:43,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:57:43,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:43,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:43,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138705555] [2023-11-26 11:57:43,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:43,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810385662] [2023-11-26 11:57:43,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810385662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:43,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:43,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:57:43,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679811945] [2023-11-26 11:57:43,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:43,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:57:43,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:43,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:57:43,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:57:43,326 INFO L87 Difference]: Start difference. First operand 213 states and 262 transitions. Second operand has 8 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 11:57:44,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:44,131 INFO L93 Difference]: Finished difference Result 365 states and 446 transitions. [2023-11-26 11:57:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:44,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2023-11-26 11:57:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:44,134 INFO L225 Difference]: With dead ends: 365 [2023-11-26 11:57:44,134 INFO L226 Difference]: Without dead ends: 363 [2023-11-26 11:57:44,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:44,135 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 408 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:44,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 164 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:57:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-26 11:57:44,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 275. [2023-11-26 11:57:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 196 states have (on average 1.6122448979591837) internal successors, (316), 247 states have internal predecessors, (316), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:57:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 366 transitions. [2023-11-26 11:57:44,172 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 366 transitions. Word has length 40 [2023-11-26 11:57:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:44,172 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 366 transitions. [2023-11-26 11:57:44,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 11:57:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 366 transitions. [2023-11-26 11:57:44,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-26 11:57:44,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:44,175 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:44,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:44,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:44,382 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:44,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1340829890, now seen corresponding path program 1 times [2023-11-26 11:57:44,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:44,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259002836] [2023-11-26 11:57:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:44,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:44,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:44,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688678115] [2023-11-26 11:57:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:44,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:44,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:44,396 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:44,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:57:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:44,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:57:44,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:57:44,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:45,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:45,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259002836] [2023-11-26 11:57:45,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:45,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688678115] [2023-11-26 11:57:45,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688678115] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:45,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:45,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:57:45,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393769553] [2023-11-26 11:57:45,558 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:45,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:57:45,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:45,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:57:45,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:45,560 INFO L87 Difference]: Start difference. First operand 275 states and 366 transitions. Second operand has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 11:57:46,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:46,112 INFO L93 Difference]: Finished difference Result 369 states and 450 transitions. [2023-11-26 11:57:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:46,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2023-11-26 11:57:46,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:46,115 INFO L225 Difference]: With dead ends: 369 [2023-11-26 11:57:46,116 INFO L226 Difference]: Without dead ends: 367 [2023-11-26 11:57:46,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:57:46,117 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 506 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:46,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 196 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:57:46,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-26 11:57:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 277. [2023-11-26 11:57:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 198 states have (on average 1.595959595959596) internal successors, (316), 249 states have internal predecessors, (316), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:57:46,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 366 transitions. [2023-11-26 11:57:46,146 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 366 transitions. Word has length 41 [2023-11-26 11:57:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:46,147 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 366 transitions. [2023-11-26 11:57:46,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 11:57:46,147 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 366 transitions. [2023-11-26 11:57:46,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:57:46,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:46,148 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] [2023-11-26 11:57:46,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:46,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:46,355 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:46,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash 44615711, now seen corresponding path program 1 times [2023-11-26 11:57:46,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:46,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470471315] [2023-11-26 11:57:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:46,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:46,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:46,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332984464] [2023-11-26 11:57:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:46,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:46,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:46,394 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:46,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:57:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:46,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:46,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 11:57:46,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:46,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:46,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470471315] [2023-11-26 11:57:46,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:46,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332984464] [2023-11-26 11:57:46,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332984464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:46,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:46,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:57:46,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46516918] [2023-11-26 11:57:46,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:46,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:46,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:46,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:46,566 INFO L87 Difference]: Start difference. First operand 277 states and 366 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:57:46,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:46,890 INFO L93 Difference]: Finished difference Result 319 states and 385 transitions. [2023-11-26 11:57:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:46,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-11-26 11:57:46,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:46,892 INFO L225 Difference]: With dead ends: 319 [2023-11-26 11:57:46,893 INFO L226 Difference]: Without dead ends: 317 [2023-11-26 11:57:46,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:46,894 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 189 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:46,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 302 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:57:46,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-26 11:57:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 278. [2023-11-26 11:57:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 199 states have (on average 1.5829145728643217) internal successors, (315), 250 states have internal predecessors, (315), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:57:46,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 365 transitions. [2023-11-26 11:57:46,924 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 365 transitions. Word has length 49 [2023-11-26 11:57:46,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:46,925 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 365 transitions. [2023-11-26 11:57:46,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:57:46,925 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 365 transitions. [2023-11-26 11:57:46,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 11:57:46,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:46,926 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] [2023-11-26 11:57:46,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:47,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:47,132 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:47,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:47,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1383087122, now seen corresponding path program 1 times [2023-11-26 11:57:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:47,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522445442] [2023-11-26 11:57:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:47,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:47,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:47,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496291586] [2023-11-26 11:57:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:47,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:47,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:47,152 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:47,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:57:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:47,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:57:47,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:47,374 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 11:57:47,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:47,542 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 11:57:47,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:47,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522445442] [2023-11-26 11:57:47,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:47,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496291586] [2023-11-26 11:57:47,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496291586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:47,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:47,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:57:47,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905800099] [2023-11-26 11:57:47,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:47,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:57:47,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:47,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:57:47,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:47,546 INFO L87 Difference]: Start difference. First operand 278 states and 365 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-26 11:57:48,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:48,046 INFO L93 Difference]: Finished difference Result 333 states and 396 transitions. [2023-11-26 11:57:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:48,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 50 [2023-11-26 11:57:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:48,049 INFO L225 Difference]: With dead ends: 333 [2023-11-26 11:57:48,049 INFO L226 Difference]: Without dead ends: 331 [2023-11-26 11:57:48,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:57:48,050 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 420 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:48,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 393 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:57:48,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-26 11:57:48,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 284. [2023-11-26 11:57:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 205 states have (on average 1.575609756097561) internal successors, (323), 255 states have internal predecessors, (323), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:57:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 375 transitions. [2023-11-26 11:57:48,083 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 375 transitions. Word has length 50 [2023-11-26 11:57:48,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:48,084 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 375 transitions. [2023-11-26 11:57:48,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-26 11:57:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 375 transitions. [2023-11-26 11:57:48,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 11:57:48,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:48,085 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] [2023-11-26 11:57:48,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:48,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:57:48,298 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:48,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:48,299 INFO L85 PathProgramCache]: Analyzing trace with hash -73972095, now seen corresponding path program 1 times [2023-11-26 11:57:48,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:48,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982849678] [2023-11-26 11:57:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:48,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:48,318 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:48,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772853371] [2023-11-26 11:57:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:48,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:48,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:48,322 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:48,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:57:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:48,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:57:48,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 11:57:48,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:48,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:48,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982849678] [2023-11-26 11:57:48,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:48,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772853371] [2023-11-26 11:57:48,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772853371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:48,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:48,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:57:48,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934204287] [2023-11-26 11:57:48,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:48,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:48,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:48,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:48,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:48,568 INFO L87 Difference]: Start difference. First operand 284 states and 375 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:57:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:49,279 INFO L93 Difference]: Finished difference Result 315 states and 383 transitions. [2023-11-26 11:57:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:49,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2023-11-26 11:57:49,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:49,282 INFO L225 Difference]: With dead ends: 315 [2023-11-26 11:57:49,282 INFO L226 Difference]: Without dead ends: 313 [2023-11-26 11:57:49,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:49,283 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 178 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:49,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 248 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:57:49,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-26 11:57:49,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 286. [2023-11-26 11:57:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 207 states have (on average 1.5603864734299517) internal successors, (323), 257 states have internal predecessors, (323), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:57:49,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 375 transitions. [2023-11-26 11:57:49,313 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 375 transitions. Word has length 51 [2023-11-26 11:57:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:49,313 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 375 transitions. [2023-11-26 11:57:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:57:49,314 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 375 transitions. [2023-11-26 11:57:49,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 11:57:49,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:49,315 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] [2023-11-26 11:57:49,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:49,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:49,521 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:49,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:49,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2001832436, now seen corresponding path program 1 times [2023-11-26 11:57:49,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:49,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676293593] [2023-11-26 11:57:49,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:49,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:49,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:49,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865752908] [2023-11-26 11:57:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:49,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:49,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:49,535 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:49,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:57:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:49,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:57:49,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 11:57:49,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:50,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:50,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676293593] [2023-11-26 11:57:50,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:50,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865752908] [2023-11-26 11:57:50,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865752908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:50,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:50,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 11:57:50,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753399732] [2023-11-26 11:57:50,147 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:50,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:57:50,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:57:50,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:50,149 INFO L87 Difference]: Start difference. First operand 286 states and 375 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-26 11:57:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:50,750 INFO L93 Difference]: Finished difference Result 313 states and 380 transitions. [2023-11-26 11:57:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:50,751 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 52 [2023-11-26 11:57:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:50,753 INFO L225 Difference]: With dead ends: 313 [2023-11-26 11:57:50,753 INFO L226 Difference]: Without dead ends: 311 [2023-11-26 11:57:50,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:57:50,754 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 252 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:50,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 305 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:57:50,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-26 11:57:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 287. [2023-11-26 11:57:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 208 states have (on average 1.5480769230769231) internal successors, (322), 258 states have internal predecessors, (322), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:57:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 374 transitions. [2023-11-26 11:57:50,784 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 374 transitions. Word has length 52 [2023-11-26 11:57:50,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:50,784 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 374 transitions. [2023-11-26 11:57:50,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-26 11:57:50,785 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 374 transitions. [2023-11-26 11:57:50,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 11:57:50,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:50,786 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:50,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:50,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:50,992 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:50,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:50,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1959843167, now seen corresponding path program 1 times [2023-11-26 11:57:50,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:50,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123357504] [2023-11-26 11:57:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:50,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:51,018 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:51,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164591931] [2023-11-26 11:57:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:51,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:51,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:51,021 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:51,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 11:57:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:51,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:57:51,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:57:51,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:51,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123357504] [2023-11-26 11:57:51,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:51,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164591931] [2023-11-26 11:57:51,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164591931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:51,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:51,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:51,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102133732] [2023-11-26 11:57:51,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:51,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:51,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:51,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:51,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:51,094 INFO L87 Difference]: Start difference. First operand 287 states and 374 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, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 11:57:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:51,146 INFO L93 Difference]: Finished difference Result 287 states and 374 transitions. [2023-11-26 11:57:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:51,147 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, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2023-11-26 11:57:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:51,151 INFO L225 Difference]: With dead ends: 287 [2023-11-26 11:57:51,151 INFO L226 Difference]: Without dead ends: 285 [2023-11-26 11:57:51,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:51,153 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 47 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 201 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 11:57:51,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 201 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:57:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-26 11:57:51,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2023-11-26 11:57:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 208 states have (on average 1.5192307692307692) internal successors, (316), 256 states have internal predecessors, (316), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:57:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 368 transitions. [2023-11-26 11:57:51,183 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 368 transitions. Word has length 59 [2023-11-26 11:57:51,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:51,183 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 368 transitions. [2023-11-26 11:57:51,184 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, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 11:57:51,184 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 368 transitions. [2023-11-26 11:57:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:57:51,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:51,185 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:51,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:51,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:57:51,392 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:51,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:51,393 INFO L85 PathProgramCache]: Analyzing trace with hash -625595905, now seen corresponding path program 1 times [2023-11-26 11:57:51,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:51,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053492112] [2023-11-26 11:57:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:51,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:51,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:51,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950058823] [2023-11-26 11:57:51,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:51,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:51,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:51,408 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:51,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 11:57:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:51,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:57:51,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:57:51,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:51,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053492112] [2023-11-26 11:57:51,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:51,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950058823] [2023-11-26 11:57:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950058823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:51,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:51,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802090051] [2023-11-26 11:57:51,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:51,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:51,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:51,480 INFO L87 Difference]: Start difference. First operand 285 states and 368 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 11:57:51,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:51,531 INFO L93 Difference]: Finished difference Result 285 states and 368 transitions. [2023-11-26 11:57:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:51,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2023-11-26 11:57:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:51,534 INFO L225 Difference]: With dead ends: 285 [2023-11-26 11:57:51,534 INFO L226 Difference]: Without dead ends: 283 [2023-11-26 11:57:51,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:51,536 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 45 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 200 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 11:57:51,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 200 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:57:51,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-26 11:57:51,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-26 11:57:51,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 208 states have (on average 1.4807692307692308) internal successors, (308), 254 states have internal predecessors, (308), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:57:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 360 transitions. [2023-11-26 11:57:51,584 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 360 transitions. Word has length 60 [2023-11-26 11:57:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:51,585 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 360 transitions. [2023-11-26 11:57:51,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 11:57:51,585 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 360 transitions. [2023-11-26 11:57:51,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:57:51,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:51,587 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:51,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:51,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:57:51,793 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:51,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:51,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2081391361, now seen corresponding path program 1 times [2023-11-26 11:57:51,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:51,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484864825] [2023-11-26 11:57:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:51,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:51,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:51,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968769364] [2023-11-26 11:57:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:51,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:51,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:51,807 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:51,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 11:57:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:51,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:57:51,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:57:51,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:51,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484864825] [2023-11-26 11:57:51,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968769364] [2023-11-26 11:57:51,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968769364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:51,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:51,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:57:51,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329985420] [2023-11-26 11:57:51,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:51,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:57:51,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:51,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:57:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:51,994 INFO L87 Difference]: Start difference. First operand 283 states and 360 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:57:52,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:52,255 INFO L93 Difference]: Finished difference Result 311 states and 388 transitions. [2023-11-26 11:57:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:57:52,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2023-11-26 11:57:52,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:52,258 INFO L225 Difference]: With dead ends: 311 [2023-11-26 11:57:52,258 INFO L226 Difference]: Without dead ends: 310 [2023-11-26 11:57:52,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 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 11:57:52,259 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 363 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:52,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 161 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-26 11:57:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 285. [2023-11-26 11:57:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 210 states have (on average 1.4761904761904763) internal successors, (310), 256 states have internal predecessors, (310), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:57:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 362 transitions. [2023-11-26 11:57:52,291 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 362 transitions. Word has length 61 [2023-11-26 11:57:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:52,293 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 362 transitions. [2023-11-26 11:57:52,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:57:52,293 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 362 transitions. [2023-11-26 11:57:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:57:52,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:52,295 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:52,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:52,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:57:52,504 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 11:57:52,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2081405263, now seen corresponding path program 1 times [2023-11-26 11:57:52,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:52,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090718876] [2023-11-26 11:57:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:52,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:52,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491172728] [2023-11-26 11:57:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:52,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:52,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:52,534 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:52,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 11:57:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:52,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:57:52,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:57:52,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:52,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:52,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090718876] [2023-11-26 11:57:52,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:52,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491172728] [2023-11-26 11:57:52,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491172728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:52,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:52,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:57:52,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386311123] [2023-11-26 11:57:52,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:52,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:57:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:57:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:52,725 INFO L87 Difference]: Start difference. First operand 285 states and 362 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:57:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:52,983 INFO L93 Difference]: Finished difference Result 310 states and 387 transitions. [2023-11-26 11:57:52,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:57:52,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2023-11-26 11:57:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:52,986 INFO L225 Difference]: With dead ends: 310 [2023-11-26 11:57:52,986 INFO L226 Difference]: Without dead ends: 309 [2023-11-26 11:57:52,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 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 11:57:52,987 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 196 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:52,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 178 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-26 11:57:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 285. [2023-11-26 11:57:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 210 states have (on average 1.4714285714285715) internal successors, (309), 256 states have internal predecessors, (309), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:57:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 361 transitions. [2023-11-26 11:57:53,020 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 361 transitions. Word has length 61 [2023-11-26 11:57:53,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:53,021 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 361 transitions. [2023-11-26 11:57:53,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:57:53,021 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 361 transitions. [2023-11-26 11:57:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:57:53,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:53,022 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:53,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:53,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:53,228 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:53,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash 99053827, now seen corresponding path program 1 times [2023-11-26 11:57:53,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:53,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264742996] [2023-11-26 11:57:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:53,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:53,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:53,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786645604] [2023-11-26 11:57:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:53,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:53,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:53,237 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:53,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 11:57:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:53,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:53,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:57:53,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:53,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:53,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264742996] [2023-11-26 11:57:53,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:53,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786645604] [2023-11-26 11:57:53,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786645604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:53,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:53,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:53,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689667588] [2023-11-26 11:57:53,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:53,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:53,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:53,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:53,384 INFO L87 Difference]: Start difference. First operand 285 states and 361 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:53,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:53,882 INFO L93 Difference]: Finished difference Result 305 states and 364 transitions. [2023-11-26 11:57:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:53,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2023-11-26 11:57:53,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:53,884 INFO L225 Difference]: With dead ends: 305 [2023-11-26 11:57:53,885 INFO L226 Difference]: Without dead ends: 303 [2023-11-26 11:57:53,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:53,886 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 49 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:53,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 151 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:57:53,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-26 11:57:53,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 285. [2023-11-26 11:57:53,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 210 states have (on average 1.457142857142857) internal successors, (306), 256 states have internal predecessors, (306), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:57:53,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 358 transitions. [2023-11-26 11:57:53,918 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 358 transitions. Word has length 62 [2023-11-26 11:57:53,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:53,919 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 358 transitions. [2023-11-26 11:57:53,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:53,919 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 358 transitions. [2023-11-26 11:57:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:57:53,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:53,920 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:53,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-26 11:57:54,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:54,127 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:54,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:54,127 INFO L85 PathProgramCache]: Analyzing trace with hash 287282565, now seen corresponding path program 1 times [2023-11-26 11:57:54,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:54,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740803172] [2023-11-26 11:57:54,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:54,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:54,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:54,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373376689] [2023-11-26 11:57:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:54,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:54,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:54,144 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:54,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 11:57:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:54,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:54,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:57:54,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:54,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:54,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740803172] [2023-11-26 11:57:54,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:54,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373376689] [2023-11-26 11:57:54,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373376689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:54,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:54,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:54,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013462624] [2023-11-26 11:57:54,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:54,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:54,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:54,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:54,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:54,316 INFO L87 Difference]: Start difference. First operand 285 states and 358 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:54,530 INFO L93 Difference]: Finished difference Result 372 states and 435 transitions. [2023-11-26 11:57:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:54,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2023-11-26 11:57:54,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:54,533 INFO L225 Difference]: With dead ends: 372 [2023-11-26 11:57:54,534 INFO L226 Difference]: Without dead ends: 370 [2023-11-26 11:57:54,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:54,535 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 70 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:54,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 135 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:54,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-26 11:57:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 293. [2023-11-26 11:57:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 218 states have (on average 1.4495412844036697) internal successors, (316), 264 states have internal predecessors, (316), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:57:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 368 transitions. [2023-11-26 11:57:54,569 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 368 transitions. Word has length 64 [2023-11-26 11:57:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:54,569 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 368 transitions. [2023-11-26 11:57:54,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 368 transitions. [2023-11-26 11:57:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:57:54,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:54,571 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:54,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:54,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:54,778 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 11:57:54,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:54,778 INFO L85 PathProgramCache]: Analyzing trace with hash 701450949, now seen corresponding path program 1 times [2023-11-26 11:57:54,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:54,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249253972] [2023-11-26 11:57:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:54,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:54,800 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:54,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937544083] [2023-11-26 11:57:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:54,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:54,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:54,802 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:54,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 11:57:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:54,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:54,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:57:54,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:54,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:54,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249253972] [2023-11-26 11:57:54,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:54,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937544083] [2023-11-26 11:57:54,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937544083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:54,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:54,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:54,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412408317] [2023-11-26 11:57:54,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:54,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:54,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:54,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:54,965 INFO L87 Difference]: Start difference. First operand 293 states and 368 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:55,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:55,259 INFO L93 Difference]: Finished difference Result 293 states and 368 transitions. [2023-11-26 11:57:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:55,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2023-11-26 11:57:55,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:55,264 INFO L225 Difference]: With dead ends: 293 [2023-11-26 11:57:55,264 INFO L226 Difference]: Without dead ends: 291 [2023-11-26 11:57:55,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:55,265 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 78 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:55,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 84 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:57:55,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-26 11:57:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-11-26 11:57:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 218 states have (on average 1.4311926605504588) internal successors, (312), 262 states have internal predecessors, (312), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 11:57:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 364 transitions. [2023-11-26 11:57:55,298 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 364 transitions. Word has length 64 [2023-11-26 11:57:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:55,299 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 364 transitions. [2023-11-26 11:57:55,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 364 transitions. [2023-11-26 11:57:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-26 11:57:55,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:55,302 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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 11:57:55,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:55,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-26 11:57:55,508 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:55,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:55,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1909443445, now seen corresponding path program 1 times [2023-11-26 11:57:55,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:55,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933433592] [2023-11-26 11:57:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:55,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:55,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:55,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886346484] [2023-11-26 11:57:55,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:55,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:55,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:55,516 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:55,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-26 11:57:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:55,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:57:55,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:57:55,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:55,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933433592] [2023-11-26 11:57:55,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886346484] [2023-11-26 11:57:55,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886346484] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:55,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:55,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-11-26 11:57:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432785858] [2023-11-26 11:57:55,908 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:55,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:55,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:55,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:55,910 INFO L87 Difference]: Start difference. First operand 291 states and 364 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, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:56,325 INFO L93 Difference]: Finished difference Result 364 states and 424 transitions. [2023-11-26 11:57:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:56,326 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, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2023-11-26 11:57:56,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:56,328 INFO L225 Difference]: With dead ends: 364 [2023-11-26 11:57:56,328 INFO L226 Difference]: Without dead ends: 362 [2023-11-26 11:57:56,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 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 11:57:56,329 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 63 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:56,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 175 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:57:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-26 11:57:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 297. [2023-11-26 11:57:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 223 states have (on average 1.4349775784753362) internal successors, (320), 267 states have internal predecessors, (320), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:57:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 374 transitions. [2023-11-26 11:57:56,365 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 374 transitions. Word has length 67 [2023-11-26 11:57:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:56,365 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 374 transitions. [2023-11-26 11:57:56,365 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, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 374 transitions. [2023-11-26 11:57:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:57:56,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:56,367 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:56,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:56,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-26 11:57:56,572 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:56,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:56,573 INFO L85 PathProgramCache]: Analyzing trace with hash -936795298, now seen corresponding path program 1 times [2023-11-26 11:57:56,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:56,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775567582] [2023-11-26 11:57:56,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:56,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:56,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:56,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209759383] [2023-11-26 11:57:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:56,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:56,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:56,582 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:56,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-26 11:57:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:56,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:57:56,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:57:56,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:56,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:56,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775567582] [2023-11-26 11:57:56,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:56,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209759383] [2023-11-26 11:57:56,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209759383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:56,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:56,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-11-26 11:57:56,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384919571] [2023-11-26 11:57:56,952 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:56,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:56,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:56,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:56,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:56,954 INFO L87 Difference]: Start difference. First operand 297 states and 374 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:57,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:57,224 INFO L93 Difference]: Finished difference Result 362 states and 422 transitions. [2023-11-26 11:57:57,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:57,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2023-11-26 11:57:57,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:57,227 INFO L225 Difference]: With dead ends: 362 [2023-11-26 11:57:57,227 INFO L226 Difference]: Without dead ends: 360 [2023-11-26 11:57:57,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 11:57:57,228 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 61 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:57,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 175 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-26 11:57:57,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2023-11-26 11:57:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 224 states have (on average 1.4285714285714286) internal successors, (320), 268 states have internal predecessors, (320), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:57:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 374 transitions. [2023-11-26 11:57:57,263 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 374 transitions. Word has length 68 [2023-11-26 11:57:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:57,263 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 374 transitions. [2023-11-26 11:57:57,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:57,264 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 374 transitions. [2023-11-26 11:57:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 11:57:57,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:57,265 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1] [2023-11-26 11:57:57,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:57,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-26 11:57:57,471 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-26 11:57:57,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1024116887, now seen corresponding path program 1 times [2023-11-26 11:57:57,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:57,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754918260] [2023-11-26 11:57:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:57,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:57,480 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:57,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20948267] [2023-11-26 11:57:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:57,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:57,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:57,482 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:57,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-26 11:57:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:57,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:57,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:57:57,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:57,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:57,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754918260] [2023-11-26 11:57:57,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:57,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20948267] [2023-11-26 11:57:57,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20948267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:57,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:57,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:57,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457637592] [2023-11-26 11:57:57,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:57,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:57,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:57,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:57,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:57,588 INFO L87 Difference]: Start difference. First operand 298 states and 374 transitions. Second operand has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:57,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:57,956 INFO L93 Difference]: Finished difference Result 362 states and 422 transitions. [2023-11-26 11:57:57,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:57,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2023-11-26 11:57:57,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:57,959 INFO L225 Difference]: With dead ends: 362 [2023-11-26 11:57:57,959 INFO L226 Difference]: Without dead ends: 358 [2023-11-26 11:57:57,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:57,960 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 59 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:57,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 189 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:57:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-26 11:57:57,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 298. [2023-11-26 11:57:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 224 states have (on average 1.4107142857142858) internal successors, (316), 268 states have internal predecessors, (316), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:57:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 370 transitions. [2023-11-26 11:57:57,994 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 370 transitions. Word has length 69 [2023-11-26 11:57:57,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:57,994 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 370 transitions. [2023-11-26 11:57:57,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:57:57,995 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 370 transitions. [2023-11-26 11:57:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 11:57:57,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:57,996 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:58,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:58,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 11:57:58,202 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 11:57:58,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash 169429588, now seen corresponding path program 1 times [2023-11-26 11:57:58,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:58,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597202659] [2023-11-26 11:57:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:58,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:58,222 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:58,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111713480] [2023-11-26 11:57:58,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:58,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:58,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:58,224 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:58,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-26 11:57:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:58,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:57:58,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 11:57:58,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 11:57:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:58,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597202659] [2023-11-26 11:57:58,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:58,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111713480] [2023-11-26 11:57:58,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111713480] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:58,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:58,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:57:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652806028] [2023-11-26 11:57:58,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:58,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:57:58,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:57:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:58,489 INFO L87 Difference]: Start difference. First operand 298 states and 370 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-26 11:57:59,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:59,188 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2023-11-26 11:57:59,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:57:59,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 72 [2023-11-26 11:57:59,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:59,190 INFO L225 Difference]: With dead ends: 308 [2023-11-26 11:57:59,190 INFO L226 Difference]: Without dead ends: 307 [2023-11-26 11:57:59,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 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 11:57:59,191 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 257 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:59,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 156 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:57:59,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-26 11:57:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 297. [2023-11-26 11:57:59,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 224 states have (on average 1.3973214285714286) internal successors, (313), 267 states have internal predecessors, (313), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:57:59,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 367 transitions. [2023-11-26 11:57:59,245 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 367 transitions. Word has length 72 [2023-11-26 11:57:59,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:59,248 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 367 transitions. [2023-11-26 11:57:59,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-26 11:57:59,248 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 367 transitions. [2023-11-26 11:57:59,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 11:57:59,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:59,249 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1] [2023-11-26 11:57:59,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:59,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 11:57:59,456 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 11:57:59,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash 628819385, now seen corresponding path program 1 times [2023-11-26 11:57:59,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:59,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065608776] [2023-11-26 11:57:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:59,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:59,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:59,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182899975] [2023-11-26 11:57:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:59,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:59,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:59,467 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:59,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-26 11:57:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:59,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:57:59,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 11:57:59,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:59,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:59,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065608776] [2023-11-26 11:57:59,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:59,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182899975] [2023-11-26 11:57:59,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182899975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:59,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:59,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:59,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522230943] [2023-11-26 11:57:59,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:59,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:59,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:59,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:59,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:59,613 INFO L87 Difference]: Start difference. First operand 297 states and 367 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:58:00,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:00,027 INFO L93 Difference]: Finished difference Result 356 states and 414 transitions. [2023-11-26 11:58:00,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:00,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2023-11-26 11:58:00,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:00,030 INFO L225 Difference]: With dead ends: 356 [2023-11-26 11:58:00,030 INFO L226 Difference]: Without dead ends: 355 [2023-11-26 11:58:00,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:00,031 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 134 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:00,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 158 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:58:00,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-26 11:58:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 297. [2023-11-26 11:58:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 224 states have (on average 1.3928571428571428) internal successors, (312), 267 states have internal predecessors, (312), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:58:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 366 transitions. [2023-11-26 11:58:00,069 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 366 transitions. Word has length 71 [2023-11-26 11:58:00,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:00,070 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 366 transitions. [2023-11-26 11:58:00,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:58:00,070 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 366 transitions. [2023-11-26 11:58:00,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-26 11:58:00,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:00,072 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:00,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:00,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 11:58:00,278 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 11:58:00,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:00,278 INFO L85 PathProgramCache]: Analyzing trace with hash 957350077, now seen corresponding path program 1 times [2023-11-26 11:58:00,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:00,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936933878] [2023-11-26 11:58:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:00,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:00,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:00,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912696536] [2023-11-26 11:58:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:00,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:00,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:00,288 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:00,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-26 11:58:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:00,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:58:00,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 11:58:00,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:00,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:00,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936933878] [2023-11-26 11:58:00,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:00,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912696536] [2023-11-26 11:58:00,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912696536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:00,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:00,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:58:00,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716269920] [2023-11-26 11:58:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:00,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:58:00,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:58:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:58:00,944 INFO L87 Difference]: Start difference. First operand 297 states and 366 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:58:02,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:02,530 INFO L93 Difference]: Finished difference Result 313 states and 369 transitions. [2023-11-26 11:58:02,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:58:02,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2023-11-26 11:58:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:02,533 INFO L225 Difference]: With dead ends: 313 [2023-11-26 11:58:02,533 INFO L226 Difference]: Without dead ends: 311 [2023-11-26 11:58:02,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:58:02,534 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 211 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:02,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 250 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 11:58:02,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-26 11:58:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 296. [2023-11-26 11:58:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 223 states have (on average 1.3856502242152466) internal successors, (309), 266 states have internal predecessors, (309), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:58:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 363 transitions. [2023-11-26 11:58:02,573 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 363 transitions. Word has length 73 [2023-11-26 11:58:02,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:02,574 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 363 transitions. [2023-11-26 11:58:02,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:58:02,574 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 363 transitions. [2023-11-26 11:58:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 11:58:02,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:02,575 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:02,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:02,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 11:58:02,782 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 11:58:02,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:02,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1981435486, now seen corresponding path program 1 times [2023-11-26 11:58:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:02,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349596493] [2023-11-26 11:58:02,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:02,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:02,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:02,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665817963] [2023-11-26 11:58:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:02,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:02,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:02,796 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:02,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-26 11:58:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:02,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:58:02,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 11:58:02,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:02,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:02,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349596493] [2023-11-26 11:58:02,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:02,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665817963] [2023-11-26 11:58:02,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665817963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:02,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:02,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:02,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392884405] [2023-11-26 11:58:02,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:02,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:02,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:02,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:02,931 INFO L87 Difference]: Start difference. First operand 296 states and 363 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:58:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:03,498 INFO L93 Difference]: Finished difference Result 355 states and 410 transitions. [2023-11-26 11:58:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:03,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-11-26 11:58:03,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:03,501 INFO L225 Difference]: With dead ends: 355 [2023-11-26 11:58:03,502 INFO L226 Difference]: Without dead ends: 352 [2023-11-26 11:58:03,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:03,503 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 76 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:03,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 209 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:58:03,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-26 11:58:03,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 299. [2023-11-26 11:58:03,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 226 states have (on average 1.3805309734513274) internal successors, (312), 269 states have internal predecessors, (312), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 11:58:03,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 366 transitions. [2023-11-26 11:58:03,550 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 366 transitions. Word has length 72 [2023-11-26 11:58:03,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:03,551 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 366 transitions. [2023-11-26 11:58:03,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:58:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 366 transitions. [2023-11-26 11:58:03,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-26 11:58:03,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:03,553 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:03,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:03,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-26 11:58:03,759 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 11:58:03,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:03,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1002095526, now seen corresponding path program 1 times [2023-11-26 11:58:03,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:03,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680630373] [2023-11-26 11:58:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:03,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:03,767 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:03,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1939211144] [2023-11-26 11:58:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:03,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:03,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:03,769 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:03,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-26 11:58:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:03,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:58:03,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:58:04,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:04,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680630373] [2023-11-26 11:58:04,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939211144] [2023-11-26 11:58:04,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939211144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:04,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:04,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 11:58:04,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233039460] [2023-11-26 11:58:04,433 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:04,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:58:04,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:58:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:58:04,435 INFO L87 Difference]: Start difference. First operand 299 states and 366 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:58:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:05,709 INFO L93 Difference]: Finished difference Result 493 states and 582 transitions. [2023-11-26 11:58:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:58:05,709 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 78 [2023-11-26 11:58:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:05,712 INFO L225 Difference]: With dead ends: 493 [2023-11-26 11:58:05,713 INFO L226 Difference]: Without dead ends: 492 [2023-11-26 11:58:05,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:58:05,714 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 318 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:05,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 421 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 11:58:05,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-11-26 11:58:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 309. [2023-11-26 11:58:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 235 states have (on average 1.3659574468085107) internal successors, (321), 278 states have internal predecessors, (321), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-26 11:58:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 377 transitions. [2023-11-26 11:58:05,756 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 377 transitions. Word has length 78 [2023-11-26 11:58:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:05,756 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 377 transitions. [2023-11-26 11:58:05,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:58:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 377 transitions. [2023-11-26 11:58:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 11:58:05,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:05,758 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:05,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:05,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:05,964 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 11:58:05,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:05,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1000190298, now seen corresponding path program 1 times [2023-11-26 11:58:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:05,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192160746] [2023-11-26 11:58:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:05,973 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:05,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627975725] [2023-11-26 11:58:05,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:05,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:05,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:05,975 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:05,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-26 11:58:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:06,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:58:06,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:58:06,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:06,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:06,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192160746] [2023-11-26 11:58:06,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:06,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627975725] [2023-11-26 11:58:06,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627975725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:06,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:06,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 11:58:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374701709] [2023-11-26 11:58:06,673 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:06,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:58:06,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:58:06,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:58:06,674 INFO L87 Difference]: Start difference. First operand 309 states and 377 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:58:08,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:08,142 INFO L93 Difference]: Finished difference Result 473 states and 552 transitions. [2023-11-26 11:58:08,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:58:08,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 79 [2023-11-26 11:58:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:08,146 INFO L225 Difference]: With dead ends: 473 [2023-11-26 11:58:08,146 INFO L226 Difference]: Without dead ends: 469 [2023-11-26 11:58:08,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:58:08,147 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 707 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:08,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 311 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 11:58:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-26 11:58:08,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 388. [2023-11-26 11:58:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 306 states have (on average 1.434640522875817) internal successors, (439), 349 states have internal predecessors, (439), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-26 11:58:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 511 transitions. [2023-11-26 11:58:08,188 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 511 transitions. Word has length 79 [2023-11-26 11:58:08,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:08,188 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 511 transitions. [2023-11-26 11:58:08,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:58:08,189 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 511 transitions. [2023-11-26 11:58:08,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:58:08,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:08,190 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:08,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:08,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:08,396 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 11:58:08,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash 941128232, now seen corresponding path program 1 times [2023-11-26 11:58:08,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:08,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044071736] [2023-11-26 11:58:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:08,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:08,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:08,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321397063] [2023-11-26 11:58:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:08,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:08,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:08,409 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:08,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-26 11:58:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:08,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:58:08,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:58:08,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:09,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:09,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044071736] [2023-11-26 11:58:09,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:09,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321397063] [2023-11-26 11:58:09,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321397063] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:09,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:09,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 11:58:09,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416733343] [2023-11-26 11:58:09,195 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:09,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:58:09,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:09,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:58:09,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:58:09,196 INFO L87 Difference]: Start difference. First operand 388 states and 511 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:58:10,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:10,054 INFO L93 Difference]: Finished difference Result 468 states and 546 transitions. [2023-11-26 11:58:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:58:10,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-11-26 11:58:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:10,057 INFO L225 Difference]: With dead ends: 468 [2023-11-26 11:58:10,057 INFO L226 Difference]: Without dead ends: 463 [2023-11-26 11:58:10,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:58:10,058 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 381 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:10,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 256 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:58:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-11-26 11:58:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 387. [2023-11-26 11:58:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 305 states have (on average 1.4131147540983606) internal successors, (431), 348 states have internal predecessors, (431), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-26 11:58:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 503 transitions. [2023-11-26 11:58:10,112 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 503 transitions. Word has length 80 [2023-11-26 11:58:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:10,113 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 503 transitions. [2023-11-26 11:58:10,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:58:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 503 transitions. [2023-11-26 11:58:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-26 11:58:10,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:10,115 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1] [2023-11-26 11:58:10,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:10,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:10,324 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 11:58:10,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:10,324 INFO L85 PathProgramCache]: Analyzing trace with hash -889795812, now seen corresponding path program 1 times [2023-11-26 11:58:10,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:10,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299866446] [2023-11-26 11:58:10,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:10,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:10,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:10,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333553406] [2023-11-26 11:58:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:10,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:10,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:10,336 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:10,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7523e919-de79-4f94-ac41-0b49b87ea462/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-26 11:58:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:10,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:58:10,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:58:10,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:11,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:11,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299866446] [2023-11-26 11:58:11,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:11,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333553406] [2023-11-26 11:58:11,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333553406] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:11,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:11,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 11:58:11,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397789347] [2023-11-26 11:58:11,003 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:11,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:58:11,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:11,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:58:11,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:58:11,004 INFO L87 Difference]: Start difference. First operand 387 states and 503 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)