./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/nr5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/nr5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a05e17fa6f76d5004d5085f0b83441da7dbecb194f05c3b661e69c00b5f4df0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:45:05,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:45:06,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:45:06,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:45:06,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:45:06,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:45:06,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:45:06,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:45:06,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:45:06,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:45:06,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:45:06,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:45:06,175 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:45:06,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:45:06,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:45:06,177 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:45:06,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:45:06,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:45:06,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:45:06,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:45:06,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:45:06,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:45:06,187 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:45:06,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:45:06,188 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:45:06,189 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:45:06,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:45:06,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:45:06,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:45:06,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:45:06,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:45:06,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:45:06,193 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:45:06,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:45:06,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:45:06,196 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:45:06,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:45:06,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:45:06,196 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:45:06,197 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_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a05e17fa6f76d5004d5085f0b83441da7dbecb194f05c3b661e69c00b5f4df0 [2023-11-06 22:45:06,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:45:06,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:45:06,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:45:06,620 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:45:06,621 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:45:06,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/array-tiling/nr5.c [2023-11-06 22:45:09,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:45:10,153 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:45:10,153 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/sv-benchmarks/c/array-tiling/nr5.c [2023-11-06 22:45:10,168 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/data/c319574fa/20b2fb320adc49e38f878c99bc2682b7/FLAG1a6a19857 [2023-11-06 22:45:10,186 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/data/c319574fa/20b2fb320adc49e38f878c99bc2682b7 [2023-11-06 22:45:10,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:45:10,191 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:45:10,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:45:10,194 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:45:10,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:45:10,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba94f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10, skipping insertion in model container [2023-11-06 22:45:10,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,233 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:45:10,441 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/sv-benchmarks/c/array-tiling/nr5.c[394,407] [2023-11-06 22:45:10,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:45:10,483 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:45:10,500 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/sv-benchmarks/c/array-tiling/nr5.c[394,407] [2023-11-06 22:45:10,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:45:10,539 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:45:10,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10 WrapperNode [2023-11-06 22:45:10,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:45:10,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:45:10,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:45:10,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:45:10,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,602 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-11-06 22:45:10,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:45:10,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:45:10,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:45:10,604 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:45:10,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:45:10,659 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:45:10,659 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:45:10,659 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:45:10,660 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (1/1) ... [2023-11-06 22:45:10,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:45:10,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:10,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:45:10,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:45:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:45:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:45:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:45:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:45:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:45:10,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:45:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:45:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:45:10,846 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:45:10,849 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:45:11,041 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:45:11,049 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:45:11,049 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:45:11,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:11 BoogieIcfgContainer [2023-11-06 22:45:11,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:45:11,055 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:45:11,055 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:45:11,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:45:11,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:10" (1/3) ... [2023-11-06 22:45:11,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1d367a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:11, skipping insertion in model container [2023-11-06 22:45:11,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:10" (2/3) ... [2023-11-06 22:45:11,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1d367a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:11, skipping insertion in model container [2023-11-06 22:45:11,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:11" (3/3) ... [2023-11-06 22:45:11,066 INFO L112 eAbstractionObserver]: Analyzing ICFG nr5.c [2023-11-06 22:45:11,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:45:11,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:45:11,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:45:11,137 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=LoopsAndPotentialCycles, 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;@1ba53058, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:45:11,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:45:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 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) [2023-11-06 22:45:11,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:45:11,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:11,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:11,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:11,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:11,164 INFO L85 PathProgramCache]: Analyzing trace with hash -405965127, now seen corresponding path program 1 times [2023-11-06 22:45:11,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:11,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291502791] [2023-11-06 22:45:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:11,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:11,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:11,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291502791] [2023-11-06 22:45:11,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291502791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:11,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:11,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:45:11,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354685296] [2023-11-06 22:45:11,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:11,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:45:11,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:45:11,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:45:11,436 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-06 22:45:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:11,459 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2023-11-06 22:45:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:45:11,462 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2023-11-06 22:45:11,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:11,472 INFO L225 Difference]: With dead ends: 45 [2023-11-06 22:45:11,472 INFO L226 Difference]: Without dead ends: 20 [2023-11-06 22:45:11,477 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 [2023-11-06 22:45:11,482 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:11,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:45:11,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-06 22:45:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-06 22:45:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2023-11-06 22:45:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-11-06 22:45:11,522 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2023-11-06 22:45:11,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:11,523 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-11-06 22:45:11,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-06 22:45:11,524 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-11-06 22:45:11,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:45:11,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:11,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:11,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:45:11,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:11,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash 274093243, now seen corresponding path program 1 times [2023-11-06 22:45:11,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:11,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056181546] [2023-11-06 22:45:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:11,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:11,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:11,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056181546] [2023-11-06 22:45:11,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056181546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:11,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:11,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:45:11,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672150656] [2023-11-06 22:45:11,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:11,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:45:11,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:11,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:45:11,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:45:11,789 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-06 22:45:11,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:11,832 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2023-11-06 22:45:11,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:45:11,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-11-06 22:45:11,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:11,834 INFO L225 Difference]: With dead ends: 25 [2023-11-06 22:45:11,834 INFO L226 Difference]: Without dead ends: 23 [2023-11-06 22:45:11,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:45:11,837 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:11,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 60 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:45:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-06 22:45:11,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-11-06 22:45:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2023-11-06 22:45:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-11-06 22:45:11,844 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2023-11-06 22:45:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:11,845 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-11-06 22:45:11,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-06 22:45:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-11-06 22:45:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:45:11,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:11,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:11,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:45:11,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:11,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:11,848 INFO L85 PathProgramCache]: Analyzing trace with hash 274152825, now seen corresponding path program 1 times [2023-11-06 22:45:11,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:11,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461057581] [2023-11-06 22:45:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:11,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:12,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:12,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461057581] [2023-11-06 22:45:12,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461057581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:12,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:12,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:45:12,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71795067] [2023-11-06 22:45:12,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:12,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:45:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:12,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:45:12,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:45:12,351 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-11-06 22:45:12,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:12,422 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2023-11-06 22:45:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:45:12,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2023-11-06 22:45:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:12,424 INFO L225 Difference]: With dead ends: 38 [2023-11-06 22:45:12,424 INFO L226 Difference]: Without dead ends: 27 [2023-11-06 22:45:12,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:45:12,436 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:12,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 27 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:45:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-06 22:45:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2023-11-06 22:45:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2023-11-06 22:45:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-11-06 22:45:12,450 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2023-11-06 22:45:12,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:12,450 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-11-06 22:45:12,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-11-06 22:45:12,451 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-06 22:45:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:45:12,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:12,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:12,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:45:12,453 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:12,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash -715167033, now seen corresponding path program 1 times [2023-11-06 22:45:12,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:12,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488911379] [2023-11-06 22:45:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:12,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:12,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:12,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488911379] [2023-11-06 22:45:12,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488911379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:12,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:12,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:45:12,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668872277] [2023-11-06 22:45:12,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:12,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:45:12,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:12,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:45:12,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:45:12,521 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-06 22:45:12,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:12,548 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-11-06 22:45:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:45:12,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-11-06 22:45:12,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:12,550 INFO L225 Difference]: With dead ends: 42 [2023-11-06 22:45:12,550 INFO L226 Difference]: Without dead ends: 26 [2023-11-06 22:45:12,551 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 [2023-11-06 22:45:12,552 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:12,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:45:12,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-06 22:45:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-11-06 22:45:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2023-11-06 22:45:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-06 22:45:12,561 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2023-11-06 22:45:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:12,562 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-06 22:45:12,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-06 22:45:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-06 22:45:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 22:45:12,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:12,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:12,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:45:12,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:12,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:12,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1618667584, now seen corresponding path program 1 times [2023-11-06 22:45:12,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:12,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667078363] [2023-11-06 22:45:12,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:12,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:12,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:12,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667078363] [2023-11-06 22:45:12,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667078363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:12,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123520010] [2023-11-06 22:45:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:12,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:12,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:12,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:12,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:45:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:12,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:45:12,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:12,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:45:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:12,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123520010] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:45:12,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:45:12,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-06 22:45:12,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961185769] [2023-11-06 22:45:12,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:45:12,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:12,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:12,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:12,885 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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) [2023-11-06 22:45:12,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:12,979 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2023-11-06 22:45:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:45:12,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 [2023-11-06 22:45:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:12,981 INFO L225 Difference]: With dead ends: 50 [2023-11-06 22:45:12,981 INFO L226 Difference]: Without dead ends: 33 [2023-11-06 22:45:12,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:12,983 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:12,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:45:12,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-06 22:45:12,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-06 22:45:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 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) [2023-11-06 22:45:12,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-11-06 22:45:12,995 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 19 [2023-11-06 22:45:12,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:12,995 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-11-06 22:45:12,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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) [2023-11-06 22:45:12,996 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-11-06 22:45:12,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:45:12,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:12,997 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:13,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:13,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:13,204 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:13,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2124634745, now seen corresponding path program 2 times [2023-11-06 22:45:13,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:13,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578464508] [2023-11-06 22:45:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:13,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,407 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:13,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:13,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578464508] [2023-11-06 22:45:13,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578464508] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:13,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654077766] [2023-11-06 22:45:13,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:45:13,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:13,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:13,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:13,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:45:13,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:45:13,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:45:13,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:45:13,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:13,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:45:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:13,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654077766] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:45:13,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:45:13,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2023-11-06 22:45:13,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052474484] [2023-11-06 22:45:13,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:45:13,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:45:13,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:13,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:45:13,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:45:13,678 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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) [2023-11-06 22:45:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:13,752 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2023-11-06 22:45:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:45:13,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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 28 [2023-11-06 22:45:13,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:13,755 INFO L225 Difference]: With dead ends: 62 [2023-11-06 22:45:13,755 INFO L226 Difference]: Without dead ends: 36 [2023-11-06 22:45:13,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:45:13,762 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:13,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 100 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:45:13,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-06 22:45:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-06 22:45:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 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) [2023-11-06 22:45:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-11-06 22:45:13,783 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2023-11-06 22:45:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:13,784 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-11-06 22:45:13,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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) [2023-11-06 22:45:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-11-06 22:45:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:45:13,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:13,788 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:13,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:14,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:14,001 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:14,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash -233654912, now seen corresponding path program 3 times [2023-11-06 22:45:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:14,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482935556] [2023-11-06 22:45:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:14,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:14,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:14,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482935556] [2023-11-06 22:45:14,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482935556] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:14,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932269868] [2023-11-06 22:45:14,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:45:14,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:14,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:14,187 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:14,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:45:14,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:45:14,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:45:14,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:45:14,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:45:14,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:45:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:45:14,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932269868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:45:14,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:45:14,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2023-11-06 22:45:14,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014917663] [2023-11-06 22:45:14,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:45:14,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:45:14,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:14,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:45:14,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:45:14,372 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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) [2023-11-06 22:45:14,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:14,508 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2023-11-06 22:45:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:45:14,509 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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 31 [2023-11-06 22:45:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:14,510 INFO L225 Difference]: With dead ends: 70 [2023-11-06 22:45:14,510 INFO L226 Difference]: Without dead ends: 41 [2023-11-06 22:45:14,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:45:14,512 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:14,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 43 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:45:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-06 22:45:14,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2023-11-06 22:45:14,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 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) [2023-11-06 22:45:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2023-11-06 22:45:14,521 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 31 [2023-11-06 22:45:14,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:14,522 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2023-11-06 22:45:14,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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) [2023-11-06 22:45:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2023-11-06 22:45:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:45:14,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:14,524 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:14,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:14,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:14,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:14,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:14,732 INFO L85 PathProgramCache]: Analyzing trace with hash 467409666, now seen corresponding path program 1 times [2023-11-06 22:45:14,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:14,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084027923] [2023-11-06 22:45:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:14,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:15,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:15,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084027923] [2023-11-06 22:45:15,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084027923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:15,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954377027] [2023-11-06 22:45:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:15,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:15,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:15,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:16,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:45:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:16,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-06 22:45:16,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:16,331 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:45:16,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:16,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-06 22:45:16,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:16,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:16,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:16,671 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:16,672 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2023-11-06 22:45:16,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:16,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:16,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:16,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:16,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:16,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:16,984 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:45:16,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2023-11-06 22:45:17,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:17,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:17,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:17,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:17,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:17,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:45:17,311 INFO L322 Elim1Store]: treesize reduction 60, result has 48.7 percent of original size [2023-11-06 22:45:17,312 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 80 [2023-11-06 22:45:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:20,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:45:25,476 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2023-11-06 22:45:25,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 259 [2023-11-06 22:45:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:45:25,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954377027] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:45:25,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:45:25,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 15] total 44 [2023-11-06 22:45:25,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215293678] [2023-11-06 22:45:25,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:45:25,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-06 22:45:25,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-06 22:45:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1581, Unknown=2, NotChecked=0, Total=1892 [2023-11-06 22:45:25,780 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 44 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 44 states have internal predecessors, (81), 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) [2023-11-06 22:45:45,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-06 22:45:47,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-06 22:45:49,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-06 22:45:51,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:45:53,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:45:55,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:02,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:04,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:06,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:08,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:08,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:08,261 INFO L93 Difference]: Finished difference Result 181 states and 204 transitions. [2023-11-06 22:46:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-06 22:46:08,261 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 44 states have internal predecessors, (81), 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 31 [2023-11-06 22:46:08,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:46:08,263 INFO L225 Difference]: With dead ends: 181 [2023-11-06 22:46:08,263 INFO L226 Difference]: Without dead ends: 171 [2023-11-06 22:46:08,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=2062, Invalid=8648, Unknown=2, NotChecked=0, Total=10712 [2023-11-06 22:46:08,269 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 722 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 95 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:46:08,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 132 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 801 Invalid, 9 Unknown, 0 Unchecked, 22.2s Time] [2023-11-06 22:46:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-06 22:46:08,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 65. [2023-11-06 22:46:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.171875) internal successors, (75), 64 states have internal predecessors, (75), 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) [2023-11-06 22:46:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2023-11-06 22:46:08,293 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 31 [2023-11-06 22:46:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:46:08,293 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2023-11-06 22:46:08,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 44 states have internal predecessors, (81), 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) [2023-11-06 22:46:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2023-11-06 22:46:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 22:46:08,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:46:08,296 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:08,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:08,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:08,500 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:46:08,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:08,500 INFO L85 PathProgramCache]: Analyzing trace with hash 594002453, now seen corresponding path program 1 times [2023-11-06 22:46:08,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:08,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982144480] [2023-11-06 22:46:08,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:08,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:09,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982144480] [2023-11-06 22:46:09,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982144480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:09,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414788931] [2023-11-06 22:46:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:09,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:09,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:09,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:09,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:46:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:09,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 22:46:09,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:09,996 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:46:10,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:46:10,127 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-06 22:46:10,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:46:10,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:46:10,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:46:10,299 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:46:10,299 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2023-11-06 22:46:10,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:46:10,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:46:10,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:46:10,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:46:10,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:46:10,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:46:10,578 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:46:10,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 39 [2023-11-06 22:46:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:11,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:28,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 49 [2023-11-06 22:46:28,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11886 treesize of output 11758 [2023-11-06 22:46:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:46:31,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414788931] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:31,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:31,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 43 [2023-11-06 22:46:31,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077245969] [2023-11-06 22:46:31,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:31,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-06 22:46:31,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:31,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-06 22:46:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1505, Unknown=8, NotChecked=0, Total=1806 [2023-11-06 22:46:31,704 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 43 states, 43 states have (on average 2.372093023255814) internal successors, (102), 43 states have internal predecessors, (102), 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) [2023-11-06 22:46:34,595 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 20 |c_ULTIMATE.start_main_~i~0#1|)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse3 (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|)) (.cse4 (select .cse0 4)) (.cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4)) .cse1)) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (and (exists ((v_arrayElimCell_17 Int) (v_arrayElimCell_16 Int)) (and (<= v_arrayElimCell_16 3) (<= (+ v_arrayElimCell_17 1) v_arrayElimCell_16) (= (select .cse0 (+ 20 (* (- 4) v_arrayElimCell_16))) v_arrayElimCell_16) (= (select .cse0 (+ (* (- 4) v_arrayElimCell_17) 20)) v_arrayElimCell_17))) (forall ((|v_ULTIMATE.start_main_~j~0#1_48| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_48| 1)) (forall ((v_ArrVal_118 Int)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4)) .cse1) v_ArrVal_118) .cse2) 1))))) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select .cse0 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|)) 1)) (or (and .cse3 (<= 4 .cse4)) (= .cse4 0)) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) .cse3 (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2) (= .cse4 4) (forall ((v_ArrVal_118 Int)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store .cse0 .cse5 v_ArrVal_118) .cse2) 1))) (forall ((|v_ULTIMATE.start_main_~j~0#1_48| Int) (v_ArrVal_118 Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_48| 1)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store (store .cse0 .cse5 |c_ULTIMATE.start_main_~j~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4)) .cse1) v_ArrVal_118) .cse2) 1))))))) is different from false [2023-11-06 22:46:40,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:42,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:44,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-06 22:46:46,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:48,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:50,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:52,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:54,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:56,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:46:59,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-06 22:47:01,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:47:03,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:47:04,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:47:07,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:47:09,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:47:11,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:11,525 INFO L93 Difference]: Finished difference Result 200 states and 228 transitions. [2023-11-06 22:47:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-06 22:47:11,525 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.372093023255814) internal successors, (102), 43 states have internal predecessors, (102), 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 37 [2023-11-06 22:47:11,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:11,529 INFO L225 Difference]: With dead ends: 200 [2023-11-06 22:47:11,529 INFO L226 Difference]: Without dead ends: 190 [2023-11-06 22:47:11,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2235 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=1052, Invalid=5749, Unknown=9, NotChecked=162, Total=6972 [2023-11-06 22:47:11,534 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 415 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 52 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:11,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 233 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 815 Invalid, 13 Unknown, 81 Unchecked, 31.6s Time] [2023-11-06 22:47:11,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-06 22:47:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 106. [2023-11-06 22:47:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.1714285714285715) internal successors, (123), 105 states have internal predecessors, (123), 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) [2023-11-06 22:47:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2023-11-06 22:47:11,589 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 37 [2023-11-06 22:47:11,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:11,590 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2023-11-06 22:47:11,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.372093023255814) internal successors, (102), 43 states have internal predecessors, (102), 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) [2023-11-06 22:47:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2023-11-06 22:47:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:47:11,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:11,593 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:11,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:11,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:11,799 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:11,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash 879791848, now seen corresponding path program 2 times [2023-11-06 22:47:11,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:11,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843322606] [2023-11-06 22:47:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:11,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:47:12,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:12,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843322606] [2023-11-06 22:47:12,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843322606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:12,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608214606] [2023-11-06 22:47:12,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:47:12,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:12,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:12,944 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:12,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:47:13,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:47:13,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:47:13,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:47:13,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:13,326 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:47:13,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:13,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-06 22:47:13,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:13,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:13,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:13,678 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:47:13,678 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2023-11-06 22:47:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:14,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:20,668 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 Int) (|v_ULTIMATE.start_main_~j~0#1_59| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_59| 1)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (let ((.cse0 (* 20 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4)) .cse0) |c_ULTIMATE.start_main_~j~0#1|) (+ (* |v_ULTIMATE.start_main_~j~0#1_59| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0) v_ArrVal_146)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) 1)))) is different from false [2023-11-06 22:47:28,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2023-11-06 22:47:28,978 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 734 treesize of output 718 [2023-11-06 22:47:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2023-11-06 22:47:29,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608214606] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:29,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:29,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 45 [2023-11-06 22:47:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618005864] [2023-11-06 22:47:29,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:29,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-06 22:47:29,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:29,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-06 22:47:29,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1641, Unknown=7, NotChecked=84, Total=1980 [2023-11-06 22:47:29,331 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand has 45 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 45 states have internal predecessors, (119), 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) [2023-11-06 22:47:52,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-06 22:47:57,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:48:04,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:48:06,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:48:08,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:48:10,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:48:12,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:48:14,340 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 20 |c_ULTIMATE.start_main_~i~0#1|)) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (forall ((|v_ULTIMATE.start_main_~j~0#1_59| Int)) (or (forall ((v_ArrVal_146 Int)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store .cse0 (+ (* |v_ULTIMATE.start_main_~j~0#1_59| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1) v_ArrVal_146) .cse2) 1))) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_59| 1)))) (let ((.cse3 (select .cse0 .cse2))) (or (< 2 .cse3) (= .cse3 0))) (forall ((v_ArrVal_146 Int)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4)) .cse1) v_ArrVal_146) .cse2) 1))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (let ((.cse4 (select .cse0 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|)))) (or (= .cse4 0) (< 2 .cse4))) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2))) is different from false [2023-11-06 22:48:16,449 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (* 20 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4)) .cse3)) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8))) (and (forall ((v_ArrVal_146 Int)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store .cse0 .cse1 v_ArrVal_146) .cse2) 1))) (forall ((v_ArrVal_146 Int) (|v_ULTIMATE.start_main_~j~0#1_59| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_59| 1)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store (store .cse0 .cse1 |c_ULTIMATE.start_main_~j~0#1|) (+ (* |v_ULTIMATE.start_main_~j~0#1_59| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3) v_ArrVal_146) .cse2) 1))))))) is different from false [2023-11-06 22:48:25,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:25,302 INFO L93 Difference]: Finished difference Result 348 states and 396 transitions. [2023-11-06 22:48:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-06 22:48:25,302 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 45 states have internal predecessors, (119), 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 43 [2023-11-06 22:48:25,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:25,304 INFO L225 Difference]: With dead ends: 348 [2023-11-06 22:48:25,304 INFO L226 Difference]: Without dead ends: 289 [2023-11-06 22:48:25,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 4628 ImplicationChecksByTransitivity, 56.2s TimeCoverageRelationStatistics Valid=1567, Invalid=11533, Unknown=22, NotChecked=684, Total=13806 [2023-11-06 22:48:25,310 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 508 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 83 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 389 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:25,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 330 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1106 Invalid, 6 Unknown, 389 Unchecked, 15.2s Time] [2023-11-06 22:48:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-06 22:48:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 149. [2023-11-06 22:48:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.1756756756756757) internal successors, (174), 148 states have internal predecessors, (174), 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) [2023-11-06 22:48:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2023-11-06 22:48:25,369 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 43 [2023-11-06 22:48:25,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:25,369 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2023-11-06 22:48:25,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 45 states have internal predecessors, (119), 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) [2023-11-06 22:48:25,370 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2023-11-06 22:48:25,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:48:25,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:25,372 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:25,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:25,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:48:25,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:25,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:25,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1886597499, now seen corresponding path program 3 times [2023-11-06 22:48:25,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:25,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980997544] [2023-11-06 22:48:25,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:25,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:26,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:26,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980997544] [2023-11-06 22:48:26,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980997544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:26,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385475466] [2023-11-06 22:48:26,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:48:26,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:26,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:26,361 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:26,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:48:26,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-06 22:48:26,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:48:26,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:48:26,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:26,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-11-06 22:48:26,654 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2023-11-06 22:48:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 17 proven. 34 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:48:29,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:29,504 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-11-06 22:48:29,509 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-11-06 22:48:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:48:29,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385475466] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:48:29,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:48:29,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 39 [2023-11-06 22:48:29,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203470365] [2023-11-06 22:48:29,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:29,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-06 22:48:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:29,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-06 22:48:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1265, Unknown=1, NotChecked=0, Total=1482 [2023-11-06 22:48:29,588 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand has 39 states, 39 states have (on average 2.923076923076923) internal successors, (114), 39 states have internal predecessors, (114), 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) [2023-11-06 22:48:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:32,763 INFO L93 Difference]: Finished difference Result 300 states and 342 transitions. [2023-11-06 22:48:32,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-06 22:48:32,764 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.923076923076923) internal successors, (114), 39 states have internal predecessors, (114), 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 49 [2023-11-06 22:48:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:32,766 INFO L225 Difference]: With dead ends: 300 [2023-11-06 22:48:32,766 INFO L226 Difference]: Without dead ends: 290 [2023-11-06 22:48:32,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1024, Invalid=4981, Unknown=1, NotChecked=0, Total=6006 [2023-11-06 22:48:32,769 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 543 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 137 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:32,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 376 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 853 Invalid, 1 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:48:32,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-06 22:48:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 173. [2023-11-06 22:48:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.180232558139535) internal successors, (203), 172 states have internal predecessors, (203), 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) [2023-11-06 22:48:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 203 transitions. [2023-11-06 22:48:32,856 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 203 transitions. Word has length 49 [2023-11-06 22:48:32,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:32,856 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 203 transitions. [2023-11-06 22:48:32,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.923076923076923) internal successors, (114), 39 states have internal predecessors, (114), 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) [2023-11-06 22:48:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 203 transitions. [2023-11-06 22:48:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 22:48:32,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:32,859 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:32,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:33,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:33,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:33,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash 883448270, now seen corresponding path program 4 times [2023-11-06 22:48:33,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:33,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674080233] [2023-11-06 22:48:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:33,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 18 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:33,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:33,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674080233] [2023-11-06 22:48:33,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674080233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:33,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174900724] [2023-11-06 22:48:33,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:48:33,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:33,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:33,619 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:33,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:48:33,716 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:48:33,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:48:33,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 22:48:33,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:33,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:48:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:34,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:34,251 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-11-06 22:48:34,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-06 22:48:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 18 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:34,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174900724] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:48:34,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:48:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 35 [2023-11-06 22:48:34,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293719521] [2023-11-06 22:48:34,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-06 22:48:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:34,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-06 22:48:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:48:34,573 INFO L87 Difference]: Start difference. First operand 173 states and 203 transitions. Second operand has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 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) [2023-11-06 22:48:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:36,760 INFO L93 Difference]: Finished difference Result 280 states and 314 transitions. [2023-11-06 22:48:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-06 22:48:36,760 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 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 55 [2023-11-06 22:48:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:36,762 INFO L225 Difference]: With dead ends: 280 [2023-11-06 22:48:36,763 INFO L226 Difference]: Without dead ends: 278 [2023-11-06 22:48:36,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2576 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1048, Invalid=6434, Unknown=0, NotChecked=0, Total=7482 [2023-11-06 22:48:36,766 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 249 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:36,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 286 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:48:36,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-06 22:48:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 191. [2023-11-06 22:48:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.168421052631579) internal successors, (222), 190 states have internal predecessors, (222), 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) [2023-11-06 22:48:36,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 222 transitions. [2023-11-06 22:48:36,837 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 222 transitions. Word has length 55 [2023-11-06 22:48:36,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:36,838 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 222 transitions. [2023-11-06 22:48:36,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 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) [2023-11-06 22:48:36,838 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 222 transitions. [2023-11-06 22:48:36,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 22:48:36,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:36,840 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:36,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:37,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:37,041 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:37,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:37,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1396626590, now seen corresponding path program 5 times [2023-11-06 22:48:37,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:37,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595944495] [2023-11-06 22:48:37,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:37,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 8 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:48:39,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:39,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595944495] [2023-11-06 22:48:39,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595944495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:39,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923182647] [2023-11-06 22:48:39,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:48:39,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:39,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:39,091 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:39,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6344225-5f56-46e5-af09-74cc5b08c481/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:48:39,266 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-11-06 22:48:39,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:48:39,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-06 22:48:39,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:39,328 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-06 22:48:39,446 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2023-11-06 22:48:39,590 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:48:39,590 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2023-11-06 22:48:39,800 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:48:39,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2023-11-06 22:48:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,080 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:48:40,080 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-06 22:48:40,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,328 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:48:40,328 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 60 [2023-11-06 22:48:40,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,640 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:48:40,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 76 [2023-11-06 22:48:40,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:40,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,000 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:48:41,000 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 92 [2023-11-06 22:48:41,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:41,507 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:48:41,507 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 95 [2023-11-06 22:48:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 55 proven. 107 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:48:42,606 INFO L327 TraceCheckSpWp]: Computing backward predicates...