./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-industry-pattern/nested-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/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_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/nested-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/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_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/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 13e5ee77a02e52d8ba8ae9f3698472ae34be00d2574eddc823f2c8e804568236 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:41:22,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:22,385 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:41:22,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:22,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:22,420 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:22,421 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:22,421 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:22,422 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:41:22,423 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:41:22,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:22,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:22,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:22,426 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:22,426 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:22,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:22,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:41:22,428 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:41:22,429 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:22,430 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:41:22,430 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:22,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:41:22,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:22,432 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:41:22,433 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:41:22,433 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:41:22,434 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:41:22,434 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:41:22,434 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:22,435 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:22,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:22,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:41:22,437 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:22,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:22,437 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:22,437 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:22,438 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:41:22,438 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:41:22,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:41:22,438 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:22,439 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:22,439 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:41:22,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:22,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:22,440 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_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13e5ee77a02e52d8ba8ae9f3698472ae34be00d2574eddc823f2c8e804568236 [2023-11-26 10:41:22,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:22,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:22,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:22,743 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:22,743 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:22,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/loop-industry-pattern/nested-3.c [2023-11-26 10:41:26,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:41:26,287 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:41:26,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/sv-benchmarks/c/loop-industry-pattern/nested-3.c [2023-11-26 10:41:26,298 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/data/e5d06aa03/618fe70dfdb646e3a7841356024b48e5/FLAG4d0dd4e14 [2023-11-26 10:41:26,316 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/data/e5d06aa03/618fe70dfdb646e3a7841356024b48e5 [2023-11-26 10:41:26,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:41:26,321 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:41:26,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:26,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:41:26,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:41:26,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d47a8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26, skipping insertion in model container [2023-11-26 10:41:26,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,357 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:41:26,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:26,563 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:41:26,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:26,615 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:41:26,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26 WrapperNode [2023-11-26 10:41:26,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:26,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:26,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:41:26,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:41:26,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,665 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2023-11-26 10:41:26,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:26,667 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:41:26,667 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:41:26,667 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:41:26,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,710 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:41:26,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,734 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:41:26,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:41:26,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:41:26,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:41:26,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (1/1) ... [2023-11-26 10:41:26,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:26,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:26,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:41:26,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:41:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:41:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:41:26,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:41:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:41:26,891 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:41:26,894 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:41:27,100 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:41:27,129 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:41:27,130 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:41:27,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:27 BoogieIcfgContainer [2023-11-26 10:41:27,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:41:27,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:41:27,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:41:27,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:41:27,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:41:26" (1/3) ... [2023-11-26 10:41:27,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecb5d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:27, skipping insertion in model container [2023-11-26 10:41:27,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:26" (2/3) ... [2023-11-26 10:41:27,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecb5d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:27, skipping insertion in model container [2023-11-26 10:41:27,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:27" (3/3) ... [2023-11-26 10:41:27,143 INFO L112 eAbstractionObserver]: Analyzing ICFG nested-3.c [2023-11-26 10:41:27,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:41:27,163 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-26 10:41:27,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:41:27,230 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;@6a127887, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:41:27,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-26 10:41:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:27,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 10:41:27,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:27,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 10:41:27,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:27,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:27,252 INFO L85 PathProgramCache]: Analyzing trace with hash -647919217, now seen corresponding path program 1 times [2023-11-26 10:41:27,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:27,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697942269] [2023-11-26 10:41:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:27,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:27,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:27,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697942269] [2023-11-26 10:41:27,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697942269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:27,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:27,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:41:27,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748217479] [2023-11-26 10:41:27,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:27,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:41:27,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:27,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:41:27,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:41:27,549 INFO L87 Difference]: Start difference. First operand has 42 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:27,596 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2023-11-26 10:41:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:41:27,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 10:41:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:27,610 INFO L225 Difference]: With dead ends: 81 [2023-11-26 10:41:27,610 INFO L226 Difference]: Without dead ends: 40 [2023-11-26 10:41:27,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:41:27,621 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:27,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-26 10:41:27,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-26 10:41:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-11-26 10:41:27,670 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 6 [2023-11-26 10:41:27,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:27,671 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-11-26 10:41:27,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:27,672 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-11-26 10:41:27,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 10:41:27,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:27,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 10:41:27,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:41:27,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:27,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:27,675 INFO L85 PathProgramCache]: Analyzing trace with hash -648366082, now seen corresponding path program 1 times [2023-11-26 10:41:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:27,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517123377] [2023-11-26 10:41:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:27,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:27,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:27,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517123377] [2023-11-26 10:41:27,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517123377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:27,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:27,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:27,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548943467] [2023-11-26 10:41:27,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:27,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:27,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:27,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:27,830 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:27,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:27,912 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2023-11-26 10:41:27,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:27,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 10:41:27,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:27,918 INFO L225 Difference]: With dead ends: 87 [2023-11-26 10:41:27,919 INFO L226 Difference]: Without dead ends: 48 [2023-11-26 10:41:27,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:27,922 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:27,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 73 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:41:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-26 10:41:27,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2023-11-26 10:41:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2023-11-26 10:41:27,930 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 6 [2023-11-26 10:41:27,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:27,931 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2023-11-26 10:41:27,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:27,932 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2023-11-26 10:41:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 10:41:27,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:27,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 10:41:27,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:41:27,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:27,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash -648318384, now seen corresponding path program 1 times [2023-11-26 10:41:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:27,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674387990] [2023-11-26 10:41:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:28,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:28,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674387990] [2023-11-26 10:41:28,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674387990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:28,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:28,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:28,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044629500] [2023-11-26 10:41:28,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:28,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:28,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:28,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:28,086 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:28,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:28,170 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2023-11-26 10:41:28,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:28,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 10:41:28,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:28,172 INFO L225 Difference]: With dead ends: 48 [2023-11-26 10:41:28,172 INFO L226 Difference]: Without dead ends: 46 [2023-11-26 10:41:28,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:28,175 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:28,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 107 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:28,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-26 10:41:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2023-11-26 10:41:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2023-11-26 10:41:28,183 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 6 [2023-11-26 10:41:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:28,183 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2023-11-26 10:41:28,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2023-11-26 10:41:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 10:41:28,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:28,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:28,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:41:28,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:28,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash -605857793, now seen corresponding path program 1 times [2023-11-26 10:41:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:28,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198511732] [2023-11-26 10:41:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:28,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:28,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:28,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198511732] [2023-11-26 10:41:28,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198511732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:28,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675738729] [2023-11-26 10:41:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:28,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:28,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:28,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:28,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:41:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:28,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:41:28,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:41:28,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:28,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675738729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:28,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:41:28,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-26 10:41:28,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067118654] [2023-11-26 10:41:28,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:28,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:28,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:28,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:41:28,408 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:28,426 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2023-11-26 10:41:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:28,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-26 10:41:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:28,428 INFO L225 Difference]: With dead ends: 45 [2023-11-26 10:41:28,428 INFO L226 Difference]: Without dead ends: 44 [2023-11-26 10:41:28,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:41:28,430 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:28,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-26 10:41:28,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-26 10:41:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2023-11-26 10:41:28,439 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 11 [2023-11-26 10:41:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:28,439 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2023-11-26 10:41:28,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2023-11-26 10:41:28,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 10:41:28,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:28,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 10:41:28,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:28,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:28,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:28,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash -605810095, now seen corresponding path program 1 times [2023-11-26 10:41:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:28,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051315022] [2023-11-26 10:41:28,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:28,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:28,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:28,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051315022] [2023-11-26 10:41:28,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051315022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738027741] [2023-11-26 10:41:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:28,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:28,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:28,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:28,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:41:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:28,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:41:28,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:28,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:28,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738027741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:28,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:41:28,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-26 10:41:28,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115705788] [2023-11-26 10:41:28,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:28,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:41:28,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:28,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:41:28,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:41:28,918 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:29,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:29,010 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2023-11-26 10:41:29,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:41:29,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-26 10:41:29,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:29,013 INFO L225 Difference]: With dead ends: 133 [2023-11-26 10:41:29,013 INFO L226 Difference]: Without dead ends: 90 [2023-11-26 10:41:29,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:41:29,015 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 81 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:29,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 95 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:41:29,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-26 10:41:29,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 66. [2023-11-26 10:41:29,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 65 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2023-11-26 10:41:29,027 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 11 [2023-11-26 10:41:29,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:29,027 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-26 10:41:29,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:29,028 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2023-11-26 10:41:29,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 10:41:29,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:29,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:29,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 10:41:29,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:29,235 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:29,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:29,235 INFO L85 PathProgramCache]: Analyzing trace with hash -605808173, now seen corresponding path program 1 times [2023-11-26 10:41:29,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:29,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987642259] [2023-11-26 10:41:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:29,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:29,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:29,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987642259] [2023-11-26 10:41:29,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987642259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:29,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583264772] [2023-11-26 10:41:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:29,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:29,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:29,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:29,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:41:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:29,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:41:29,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:29,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:29,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583264772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:29,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:41:29,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-26 10:41:29,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995151561] [2023-11-26 10:41:29,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:29,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:41:29,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:29,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:41:29,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:41:29,488 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:29,584 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2023-11-26 10:41:29,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:41:29,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-26 10:41:29,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:29,588 INFO L225 Difference]: With dead ends: 67 [2023-11-26 10:41:29,588 INFO L226 Difference]: Without dead ends: 66 [2023-11-26 10:41:29,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:41:29,591 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 43 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:29,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 93 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:41:29,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-26 10:41:29,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-11-26 10:41:29,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 64 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:29,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2023-11-26 10:41:29,600 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 11 [2023-11-26 10:41:29,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:29,601 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2023-11-26 10:41:29,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2023-11-26 10:41:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 10:41:29,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:29,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:29,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:29,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:29,803 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:29,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:29,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1601722328, now seen corresponding path program 1 times [2023-11-26 10:41:29,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:29,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094296017] [2023-11-26 10:41:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:29,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:29,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:29,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094296017] [2023-11-26 10:41:29,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094296017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:29,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951419526] [2023-11-26 10:41:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:29,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:29,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:29,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:29,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:41:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:29,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:41:29,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:29,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:30,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951419526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:30,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:30,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-11-26 10:41:30,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036512671] [2023-11-26 10:41:30,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:30,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:41:30,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:30,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:41:30,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:41:30,024 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:30,297 INFO L93 Difference]: Finished difference Result 269 states and 343 transitions. [2023-11-26 10:41:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 10:41:30,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-26 10:41:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:30,301 INFO L225 Difference]: With dead ends: 269 [2023-11-26 10:41:30,301 INFO L226 Difference]: Without dead ends: 205 [2023-11-26 10:41:30,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2023-11-26 10:41:30,304 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 133 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:30,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 245 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:41:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-26 10:41:30,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 98. [2023-11-26 10:41:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 97 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 133 transitions. [2023-11-26 10:41:30,318 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 133 transitions. Word has length 12 [2023-11-26 10:41:30,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:30,319 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 133 transitions. [2023-11-26 10:41:30,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 133 transitions. [2023-11-26 10:41:30,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 10:41:30,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:30,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:30,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:30,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:30,526 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:30,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:30,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1600184119, now seen corresponding path program 1 times [2023-11-26 10:41:30,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:30,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140030304] [2023-11-26 10:41:30,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:30,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:41:30,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:30,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140030304] [2023-11-26 10:41:30,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140030304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:30,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:30,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:30,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319374467] [2023-11-26 10:41:30,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:30,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:30,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:30,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:30,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:30,582 INFO L87 Difference]: Start difference. First operand 98 states and 133 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:30,616 INFO L93 Difference]: Finished difference Result 99 states and 134 transitions. [2023-11-26 10:41:30,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:30,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-26 10:41:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:30,620 INFO L225 Difference]: With dead ends: 99 [2023-11-26 10:41:30,620 INFO L226 Difference]: Without dead ends: 98 [2023-11-26 10:41:30,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:30,623 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:30,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 99 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:30,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-26 10:41:30,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2023-11-26 10:41:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 96 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 130 transitions. [2023-11-26 10:41:30,648 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 130 transitions. Word has length 12 [2023-11-26 10:41:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:30,649 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 130 transitions. [2023-11-26 10:41:30,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 130 transitions. [2023-11-26 10:41:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 10:41:30,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:30,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:30,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:41:30,651 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:30,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash -544769487, now seen corresponding path program 1 times [2023-11-26 10:41:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:30,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559179803] [2023-11-26 10:41:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:30,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:41:30,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:30,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559179803] [2023-11-26 10:41:30,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559179803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:30,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:30,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:41:30,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572336168] [2023-11-26 10:41:30,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:30,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:30,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:30,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:30,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:30,722 INFO L87 Difference]: Start difference. First operand 97 states and 130 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:30,755 INFO L93 Difference]: Finished difference Result 177 states and 219 transitions. [2023-11-26 10:41:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:41:30,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-26 10:41:30,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:30,757 INFO L225 Difference]: With dead ends: 177 [2023-11-26 10:41:30,757 INFO L226 Difference]: Without dead ends: 113 [2023-11-26 10:41:30,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:30,759 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 34 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:30,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 148 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-26 10:41:30,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2023-11-26 10:41:30,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 86 states have (on average 1.5) internal successors, (129), 96 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 129 transitions. [2023-11-26 10:41:30,769 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 129 transitions. Word has length 17 [2023-11-26 10:41:30,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:30,769 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 129 transitions. [2023-11-26 10:41:30,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 129 transitions. [2023-11-26 10:41:30,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 10:41:30,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:30,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:30,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:41:30,771 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:30,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1555893079, now seen corresponding path program 1 times [2023-11-26 10:41:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:30,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121119971] [2023-11-26 10:41:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 10:41:30,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:30,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121119971] [2023-11-26 10:41:30,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121119971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:30,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:30,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:41:30,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332720128] [2023-11-26 10:41:30,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:30,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:30,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:30,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:30,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:30,815 INFO L87 Difference]: Start difference. First operand 97 states and 129 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:30,843 INFO L93 Difference]: Finished difference Result 183 states and 233 transitions. [2023-11-26 10:41:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:30,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-26 10:41:30,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:30,845 INFO L225 Difference]: With dead ends: 183 [2023-11-26 10:41:30,845 INFO L226 Difference]: Without dead ends: 87 [2023-11-26 10:41:30,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:30,846 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 16 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:30,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 100 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-26 10:41:30,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 50. [2023-11-26 10:41:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2023-11-26 10:41:30,853 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 17 [2023-11-26 10:41:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:30,853 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2023-11-26 10:41:30,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2023-11-26 10:41:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 10:41:30,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:30,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:30,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:41:30,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:30,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1555886737, now seen corresponding path program 1 times [2023-11-26 10:41:30,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:30,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478344649] [2023-11-26 10:41:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:30,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 10:41:30,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:30,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478344649] [2023-11-26 10:41:30,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478344649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:30,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:30,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:41:30,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138984436] [2023-11-26 10:41:30,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:30,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:30,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:30,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:30,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:30,891 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:30,916 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2023-11-26 10:41:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:30,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-26 10:41:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:30,918 INFO L225 Difference]: With dead ends: 87 [2023-11-26 10:41:30,918 INFO L226 Difference]: Without dead ends: 83 [2023-11-26 10:41:30,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:30,919 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:30,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-26 10:41:30,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-26 10:41:30,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 75 states have (on average 1.24) internal successors, (93), 82 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2023-11-26 10:41:30,932 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 17 [2023-11-26 10:41:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:30,932 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2023-11-26 10:41:30,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,933 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2023-11-26 10:41:30,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-26 10:41:30,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:30,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:30,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:41:30,934 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:30,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:30,935 INFO L85 PathProgramCache]: Analyzing trace with hash -558532335, now seen corresponding path program 1 times [2023-11-26 10:41:30,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:30,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257085595] [2023-11-26 10:41:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:30,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 10:41:30,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:30,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257085595] [2023-11-26 10:41:30,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257085595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:30,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:30,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:41:30,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054690551] [2023-11-26 10:41:30,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:30,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:30,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:30,967 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:30,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:30,998 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2023-11-26 10:41:30,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:30,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-26 10:41:30,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:31,000 INFO L225 Difference]: With dead ends: 91 [2023-11-26 10:41:31,000 INFO L226 Difference]: Without dead ends: 87 [2023-11-26 10:41:31,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:31,001 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 9 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:31,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 57 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:31,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-26 10:41:31,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-26 10:41:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 86 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2023-11-26 10:41:31,012 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 19 [2023-11-26 10:41:31,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:31,012 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2023-11-26 10:41:31,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2023-11-26 10:41:31,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-26 10:41:31,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:31,014 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:31,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:41:31,015 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:31,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:31,016 INFO L85 PathProgramCache]: Analyzing trace with hash 496296068, now seen corresponding path program 1 times [2023-11-26 10:41:31,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:31,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281614308] [2023-11-26 10:41:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:31,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 10:41:31,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:31,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281614308] [2023-11-26 10:41:31,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281614308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:31,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129206782] [2023-11-26 10:41:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:31,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:31,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:31,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:31,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:41:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:31,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:41:31,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 10:41:31,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 10:41:31,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129206782] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:31,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:31,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 7, 7] total 14 [2023-11-26 10:41:31,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896646951] [2023-11-26 10:41:31,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:31,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:41:31,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:41:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:41:31,325 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:31,715 INFO L93 Difference]: Finished difference Result 210 states and 246 transitions. [2023-11-26 10:41:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 10:41:31,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-26 10:41:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:31,719 INFO L225 Difference]: With dead ends: 210 [2023-11-26 10:41:31,720 INFO L226 Difference]: Without dead ends: 145 [2023-11-26 10:41:31,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2023-11-26 10:41:31,725 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 85 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:31,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 206 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:41:31,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-26 10:41:31,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-26 10:41:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 139 states have (on average 1.158273381294964) internal successors, (161), 144 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2023-11-26 10:41:31,744 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 40 [2023-11-26 10:41:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:31,745 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2023-11-26 10:41:31,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:31,745 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2023-11-26 10:41:31,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 10:41:31,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:31,752 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:31,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:31,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:31,958 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:31,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:31,958 INFO L85 PathProgramCache]: Analyzing trace with hash -979678625, now seen corresponding path program 1 times [2023-11-26 10:41:31,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:31,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881514057] [2023-11-26 10:41:31,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:31,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-26 10:41:32,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:32,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881514057] [2023-11-26 10:41:32,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881514057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:32,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625631328] [2023-11-26 10:41:32,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:32,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:32,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:32,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:32,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:41:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:32,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:41:32,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 137 proven. 55 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-26 10:41:32,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 137 proven. 55 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-26 10:41:32,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625631328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:32,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:32,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 13, 13] total 26 [2023-11-26 10:41:32,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283108399] [2023-11-26 10:41:32,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:32,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 10:41:32,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:32,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 10:41:32,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2023-11-26 10:41:32,513 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand has 26 states, 26 states have (on average 4.038461538461538) internal successors, (105), 26 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:33,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:33,659 INFO L93 Difference]: Finished difference Result 485 states and 574 transitions. [2023-11-26 10:41:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-26 10:41:33,660 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.038461538461538) internal successors, (105), 26 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-26 10:41:33,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:33,663 INFO L225 Difference]: With dead ends: 485 [2023-11-26 10:41:33,663 INFO L226 Difference]: Without dead ends: 392 [2023-11-26 10:41:33,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1521, Invalid=4485, Unknown=0, NotChecked=0, Total=6006 [2023-11-26 10:41:33,667 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 242 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:33,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 201 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:41:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-11-26 10:41:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2023-11-26 10:41:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 386 states have (on average 1.1243523316062176) internal successors, (434), 391 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 434 transitions. [2023-11-26 10:41:33,702 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 434 transitions. Word has length 71 [2023-11-26 10:41:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:33,702 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 434 transitions. [2023-11-26 10:41:33,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.038461538461538) internal successors, (105), 26 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 434 transitions. [2023-11-26 10:41:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-26 10:41:33,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:33,706 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:33,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:33,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 10:41:33,912 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:33,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash -535572194, now seen corresponding path program 1 times [2023-11-26 10:41:33,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:33,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884760403] [2023-11-26 10:41:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:33,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 635 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2023-11-26 10:41:34,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:34,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884760403] [2023-11-26 10:41:34,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884760403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:34,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516666859] [2023-11-26 10:41:34,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:34,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:34,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:34,067 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:34,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:41:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:34,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-26 10:41:34,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 629 proven. 286 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-26 10:41:34,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 629 proven. 286 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-26 10:41:35,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516666859] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:35,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:35,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 25, 25] total 50 [2023-11-26 10:41:35,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711806865] [2023-11-26 10:41:35,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:35,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-26 10:41:35,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:35,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-26 10:41:35,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=1846, Unknown=0, NotChecked=0, Total=2450 [2023-11-26 10:41:35,359 INFO L87 Difference]: Start difference. First operand 392 states and 434 transitions. Second operand has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:38,075 INFO L93 Difference]: Finished difference Result 1030 states and 1211 transitions. [2023-11-26 10:41:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-26 10:41:38,077 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-11-26 10:41:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:38,081 INFO L225 Difference]: With dead ends: 1030 [2023-11-26 10:41:38,081 INFO L226 Difference]: Without dead ends: 750 [2023-11-26 10:41:38,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5810 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4048, Invalid=15412, Unknown=0, NotChecked=0, Total=19460 [2023-11-26 10:41:38,093 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 469 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:38,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 260 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:41:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-11-26 10:41:38,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2023-11-26 10:41:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 746 states have (on average 1.1099195710455765) internal successors, (828), 749 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 828 transitions. [2023-11-26 10:41:38,151 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 828 transitions. Word has length 132 [2023-11-26 10:41:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:38,152 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 828 transitions. [2023-11-26 10:41:38,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 828 transitions. [2023-11-26 10:41:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-11-26 10:41:38,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:38,157 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:38,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:38,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 10:41:38,364 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:38,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:38,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1062189627, now seen corresponding path program 1 times [2023-11-26 10:41:38,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:38,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857322980] [2023-11-26 10:41:38,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:38,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5272 backedges. 0 proven. 2696 refuted. 0 times theorem prover too weak. 2576 trivial. 0 not checked. [2023-11-26 10:41:38,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:38,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857322980] [2023-11-26 10:41:38,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857322980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905546134] [2023-11-26 10:41:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:38,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:38,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:38,629 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:38,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:41:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:38,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-26 10:41:38,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5272 backedges. 2693 proven. 1288 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2023-11-26 10:41:40,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5272 backedges. 2693 proven. 1288 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2023-11-26 10:41:42,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905546134] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:42,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:42,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 49, 49] total 98 [2023-11-26 10:41:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51930994] [2023-11-26 10:41:42,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:42,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-11-26 10:41:42,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-11-26 10:41:42,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2357, Invalid=7149, Unknown=0, NotChecked=0, Total=9506 [2023-11-26 10:41:42,533 INFO L87 Difference]: Start difference. First operand 750 states and 828 transitions. Second operand has 98 states, 98 states have (on average 2.989795918367347) internal successors, (293), 98 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:54,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:54,321 INFO L93 Difference]: Finished difference Result 2475 states and 2922 transitions. [2023-11-26 10:41:54,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2023-11-26 10:41:54,322 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.989795918367347) internal successors, (293), 98 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2023-11-26 10:41:54,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:54,333 INFO L225 Difference]: With dead ends: 2475 [2023-11-26 10:41:54,334 INFO L226 Difference]: Without dead ends: 1957 [2023-11-26 10:41:54,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36668 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=25119, Invalid=83451, Unknown=0, NotChecked=0, Total=108570 [2023-11-26 10:41:54,359 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1539 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:54,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 255 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:41:54,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2023-11-26 10:41:54,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1470. [2023-11-26 10:41:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1466 states have (on average 1.1050477489768076) internal successors, (1620), 1469 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1620 transitions. [2023-11-26 10:41:54,458 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1620 transitions. Word has length 253 [2023-11-26 10:41:54,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:54,458 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 1620 transitions. [2023-11-26 10:41:54,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.989795918367347) internal successors, (293), 98 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1620 transitions. [2023-11-26 10:41:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-11-26 10:41:54,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:54,470 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:54,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-26 10:41:54,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 10:41:54,679 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-26 10:41:54,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1106475135, now seen corresponding path program 1 times [2023-11-26 10:41:54,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:54,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268179531] [2023-11-26 10:41:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:54,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 11148 refuted. 0 times theorem prover too weak. 10904 trivial. 0 not checked. [2023-11-26 10:41:55,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:55,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268179531] [2023-11-26 10:41:55,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268179531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:55,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5540668] [2023-11-26 10:41:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:55,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:55,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:55,153 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:55,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32efc30b-deb8-4c0c-9e50-2d6b1b5cc8c1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:41:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:55,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-26 10:41:55,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 11141 proven. 5452 refuted. 0 times theorem prover too weak. 5459 trivial. 0 not checked. [2023-11-26 10:41:59,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 11141 proven. 5452 refuted. 0 times theorem prover too weak. 5459 trivial. 0 not checked. [2023-11-26 10:42:07,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5540668] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:07,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:42:07,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 97, 97] total 194 [2023-11-26 10:42:07,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715754114] [2023-11-26 10:42:07,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:07,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2023-11-26 10:42:07,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:07,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2023-11-26 10:42:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9317, Invalid=28125, Unknown=0, NotChecked=0, Total=37442 [2023-11-26 10:42:07,883 INFO L87 Difference]: Start difference. First operand 1470 states and 1620 transitions. Second operand has 194 states, 194 states have (on average 2.716494845360825) internal successors, (527), 194 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)