./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/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_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/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_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/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 1405ce2683e9fc1142823331bc73f3fedb50a2caefebf44893a593622c3225ed --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:14:41,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:14:41,176 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:14:41,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:14:41,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:14:41,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:14:41,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:14:41,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:14:41,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:14:41,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:14:41,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:14:41,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:14:41,233 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:14:41,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:14:41,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:14:41,236 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:14:41,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:14:41,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:14:41,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:14:41,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:14:41,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:14:41,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:14:41,240 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:14:41,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:14:41,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:14:41,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:14:41,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:14:41,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:14:41,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:41,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:14:41,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:14:41,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:14:41,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:14:41,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:14:41,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:14:41,247 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:14:41,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:14:41,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:14:41,248 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:14:41,249 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_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1405ce2683e9fc1142823331bc73f3fedb50a2caefebf44893a593622c3225ed [2023-11-06 21:14:41,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:14:41,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:14:41,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:14:41,624 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:14:41,625 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:14:41,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem03_label20.c [2023-11-06 21:14:44,733 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:45,143 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:45,144 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/sv-benchmarks/c/eca-rers2012/Problem03_label20.c [2023-11-06 21:14:45,164 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/data/fb367d85c/6f5adc0172bc485ea05bfc2f1f7b5aa4/FLAG955ff53c4 [2023-11-06 21:14:45,188 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/data/fb367d85c/6f5adc0172bc485ea05bfc2f1f7b5aa4 [2023-11-06 21:14:45,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:45,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:45,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:45,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:45,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:45,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:45" (1/1) ... [2023-11-06 21:14:45,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743e8a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:45, skipping insertion in model container [2023-11-06 21:14:45,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:45" (1/1) ... [2023-11-06 21:14:45,295 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:46,007 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_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/sv-benchmarks/c/eca-rers2012/Problem03_label20.c[60555,60568] [2023-11-06 21:14:46,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:46,058 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:46,589 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_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/sv-benchmarks/c/eca-rers2012/Problem03_label20.c[60555,60568] [2023-11-06 21:14:46,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:46,622 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:46,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46 WrapperNode [2023-11-06 21:14:46,623 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:46,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:46,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:46,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:46,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (1/1) ... [2023-11-06 21:14:46,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (1/1) ... [2023-11-06 21:14:46,776 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-11-06 21:14:46,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:46,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:46,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:46,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:46,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (1/1) ... [2023-11-06 21:14:46,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (1/1) ... [2023-11-06 21:14:46,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (1/1) ... [2023-11-06 21:14:46,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (1/1) ... [2023-11-06 21:14:46,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (1/1) ... [2023-11-06 21:14:46,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (1/1) ... [2023-11-06 21:14:46,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (1/1) ... [2023-11-06 21:14:46,895 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (1/1) ... [2023-11-06 21:14:46,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:46,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:46,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:46,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:46,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (1/1) ... [2023-11-06 21:14:46,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:46,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:46,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:46,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:47,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:47,113 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:47,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:49,211 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:49,230 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:49,248 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:14:49,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:49 BoogieIcfgContainer [2023-11-06 21:14:49,252 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:49,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:14:49,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:14:49,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:14:49,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:45" (1/3) ... [2023-11-06 21:14:49,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c82e467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:49, skipping insertion in model container [2023-11-06 21:14:49,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:46" (2/3) ... [2023-11-06 21:14:49,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c82e467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:49, skipping insertion in model container [2023-11-06 21:14:49,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:49" (3/3) ... [2023-11-06 21:14:49,267 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label20.c [2023-11-06 21:14:49,288 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:14:49,288 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:14:49,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:14:49,378 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;@4205449b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:14:49,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:14:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 21:14:49,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-06 21:14:49,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:49,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:49,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:49,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:49,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1628187933, now seen corresponding path program 1 times [2023-11-06 21:14:49,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:49,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718647522] [2023-11-06 21:14:49,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:49,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:50,818 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 21:14:50,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:50,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718647522] [2023-11-06 21:14:50,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718647522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:50,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:50,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:14:50,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889855003] [2023-11-06 21:14:50,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:50,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:14:50,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:50,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:50,882 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 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 21:14:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:52,210 INFO L93 Difference]: Finished difference Result 836 states and 1480 transitions. [2023-11-06 21:14:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:14:52,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 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 195 [2023-11-06 21:14:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:52,229 INFO L225 Difference]: With dead ends: 836 [2023-11-06 21:14:52,229 INFO L226 Difference]: Without dead ends: 457 [2023-11-06 21:14:52,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:14:52,242 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 88 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:52,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 150 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 21:14:52,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-11-06 21:14:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 451. [2023-11-06 21:14:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.5977777777777777) internal successors, (719), 450 states have internal predecessors, (719), 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 21:14:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 719 transitions. [2023-11-06 21:14:52,320 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 719 transitions. Word has length 195 [2023-11-06 21:14:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:52,321 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 719 transitions. [2023-11-06 21:14:52,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 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 21:14:52,322 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 719 transitions. [2023-11-06 21:14:52,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-06 21:14:52,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:52,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:52,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:14:52,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:52,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:52,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1999430185, now seen corresponding path program 1 times [2023-11-06 21:14:52,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:52,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315663073] [2023-11-06 21:14:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:52,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:52,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315663073] [2023-11-06 21:14:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315663073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:52,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:52,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:14:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516751569] [2023-11-06 21:14:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:52,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:14:52,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:52,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:52,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:52,839 INFO L87 Difference]: Start difference. First operand 451 states and 719 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 21:14:53,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:53,863 INFO L93 Difference]: Finished difference Result 1340 states and 2142 transitions. [2023-11-06 21:14:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:14:53,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 201 [2023-11-06 21:14:53,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:53,880 INFO L225 Difference]: With dead ends: 1340 [2023-11-06 21:14:53,881 INFO L226 Difference]: Without dead ends: 891 [2023-11-06 21:14:53,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:14:53,886 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:53,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 141 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 21:14:53,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2023-11-06 21:14:53,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 886. [2023-11-06 21:14:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 1.5785310734463276) internal successors, (1397), 885 states have internal predecessors, (1397), 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 21:14:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1397 transitions. [2023-11-06 21:14:53,952 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1397 transitions. Word has length 201 [2023-11-06 21:14:53,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:53,953 INFO L495 AbstractCegarLoop]: Abstraction has 886 states and 1397 transitions. [2023-11-06 21:14:53,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 21:14:53,954 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1397 transitions. [2023-11-06 21:14:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-06 21:14:53,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:53,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:53,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:14:53,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:53,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash -998854967, now seen corresponding path program 1 times [2023-11-06 21:14:53,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:53,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718779068] [2023-11-06 21:14:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:54,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:54,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718779068] [2023-11-06 21:14:54,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718779068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:54,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:54,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:14:54,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8776260] [2023-11-06 21:14:54,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:54,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:14:54,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:54,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:54,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:54,432 INFO L87 Difference]: Start difference. First operand 886 states and 1397 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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 21:14:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:55,597 INFO L93 Difference]: Finished difference Result 2605 states and 4115 transitions. [2023-11-06 21:14:55,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:14:55,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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 205 [2023-11-06 21:14:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:55,610 INFO L225 Difference]: With dead ends: 2605 [2023-11-06 21:14:55,610 INFO L226 Difference]: Without dead ends: 1721 [2023-11-06 21:14:55,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:14:55,613 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 234 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:55,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 124 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:14:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2023-11-06 21:14:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1719. [2023-11-06 21:14:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.5017462165308497) internal successors, (2580), 1718 states have internal predecessors, (2580), 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 21:14:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2580 transitions. [2023-11-06 21:14:55,676 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2580 transitions. Word has length 205 [2023-11-06 21:14:55,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:55,677 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2580 transitions. [2023-11-06 21:14:55,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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 21:14:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2580 transitions. [2023-11-06 21:14:55,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-06 21:14:55,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:55,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:55,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:14:55,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:55,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:55,687 INFO L85 PathProgramCache]: Analyzing trace with hash 8555694, now seen corresponding path program 1 times [2023-11-06 21:14:55,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:55,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900906327] [2023-11-06 21:14:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:55,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:56,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:56,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900906327] [2023-11-06 21:14:56,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900906327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:56,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:56,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:14:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107074658] [2023-11-06 21:14:56,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:56,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:14:56,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:56,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:56,100 INFO L87 Difference]: Start difference. First operand 1719 states and 2580 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 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 21:14:57,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:57,323 INFO L93 Difference]: Finished difference Result 5126 states and 7705 transitions. [2023-11-06 21:14:57,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:14:57,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 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 207 [2023-11-06 21:14:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:57,346 INFO L225 Difference]: With dead ends: 5126 [2023-11-06 21:14:57,346 INFO L226 Difference]: Without dead ends: 3409 [2023-11-06 21:14:57,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:14:57,351 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:57,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 181 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:14:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2023-11-06 21:14:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3397. [2023-11-06 21:14:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3396 states have (on average 1.4840989399293287) internal successors, (5040), 3396 states have internal predecessors, (5040), 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 21:14:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 5040 transitions. [2023-11-06 21:14:57,458 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 5040 transitions. Word has length 207 [2023-11-06 21:14:57,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:57,459 INFO L495 AbstractCegarLoop]: Abstraction has 3397 states and 5040 transitions. [2023-11-06 21:14:57,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 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 21:14:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 5040 transitions. [2023-11-06 21:14:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-06 21:14:57,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:57,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:57,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:14:57,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:57,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1855272595, now seen corresponding path program 1 times [2023-11-06 21:14:57,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:57,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330697972] [2023-11-06 21:14:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:57,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:57,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:57,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330697972] [2023-11-06 21:14:57,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330697972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:57,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:57,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:14:57,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312035078] [2023-11-06 21:14:57,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:57,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:14:57,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:57,912 INFO L87 Difference]: Start difference. First operand 3397 states and 5040 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 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 21:14:59,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:59,092 INFO L93 Difference]: Finished difference Result 10087 states and 14974 transitions. [2023-11-06 21:14:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:14:59,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 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 209 [2023-11-06 21:14:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:59,137 INFO L225 Difference]: With dead ends: 10087 [2023-11-06 21:14:59,138 INFO L226 Difference]: Without dead ends: 6692 [2023-11-06 21:14:59,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:14:59,148 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 240 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:59,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 152 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:14:59,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6692 states. [2023-11-06 21:14:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6692 to 6687. [2023-11-06 21:14:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6687 states, 6686 states have (on average 1.4119054741250374) internal successors, (9440), 6686 states have internal predecessors, (9440), 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 21:14:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6687 states to 6687 states and 9440 transitions. [2023-11-06 21:14:59,355 INFO L78 Accepts]: Start accepts. Automaton has 6687 states and 9440 transitions. Word has length 209 [2023-11-06 21:14:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:59,356 INFO L495 AbstractCegarLoop]: Abstraction has 6687 states and 9440 transitions. [2023-11-06 21:14:59,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 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 21:14:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 6687 states and 9440 transitions. [2023-11-06 21:14:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-06 21:14:59,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:59,373 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:59,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:14:59,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:59,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:59,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2082869299, now seen corresponding path program 1 times [2023-11-06 21:14:59,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:59,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242948230] [2023-11-06 21:14:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:14:59,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:59,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242948230] [2023-11-06 21:14:59,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242948230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:59,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:59,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:14:59,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637571799] [2023-11-06 21:14:59,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:59,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:14:59,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:59,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:59,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:59,950 INFO L87 Difference]: Start difference. First operand 6687 states and 9440 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 21:15:01,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:01,344 INFO L93 Difference]: Finished difference Result 19503 states and 27570 transitions. [2023-11-06 21:15:01,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 216 [2023-11-06 21:15:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:01,458 INFO L225 Difference]: With dead ends: 19503 [2023-11-06 21:15:01,458 INFO L226 Difference]: Without dead ends: 12818 [2023-11-06 21:15:01,468 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 21:15:01,472 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:01,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 395 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:15:01,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12818 states. [2023-11-06 21:15:01,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12818 to 12808. [2023-11-06 21:15:01,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12808 states, 12807 states have (on average 1.3145935816350434) internal successors, (16836), 12807 states have internal predecessors, (16836), 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 21:15:01,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12808 states to 12808 states and 16836 transitions. [2023-11-06 21:15:01,936 INFO L78 Accepts]: Start accepts. Automaton has 12808 states and 16836 transitions. Word has length 216 [2023-11-06 21:15:01,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:01,937 INFO L495 AbstractCegarLoop]: Abstraction has 12808 states and 16836 transitions. [2023-11-06 21:15:01,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 21:15:01,938 INFO L276 IsEmpty]: Start isEmpty. Operand 12808 states and 16836 transitions. [2023-11-06 21:15:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-06 21:15:01,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:01,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:01,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:15:01,974 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:01,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1181739744, now seen corresponding path program 1 times [2023-11-06 21:15:01,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:01,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566344966] [2023-11-06 21:15:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:01,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:02,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566344966] [2023-11-06 21:15:02,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566344966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:02,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:02,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581427578] [2023-11-06 21:15:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:02,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:02,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:02,498 INFO L87 Difference]: Start difference. First operand 12808 states and 16836 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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 21:15:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:03,706 INFO L93 Difference]: Finished difference Result 38319 states and 50383 transitions. [2023-11-06 21:15:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:03,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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 218 [2023-11-06 21:15:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:03,766 INFO L225 Difference]: With dead ends: 38319 [2023-11-06 21:15:03,766 INFO L226 Difference]: Without dead ends: 25513 [2023-11-06 21:15:03,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:15:03,789 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:03,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 129 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 21:15:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25513 states. [2023-11-06 21:15:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25513 to 25453. [2023-11-06 21:15:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25453 states, 25452 states have (on average 1.3042197076850541) internal successors, (33195), 25452 states have internal predecessors, (33195), 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 21:15:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25453 states to 25453 states and 33195 transitions. [2023-11-06 21:15:04,406 INFO L78 Accepts]: Start accepts. Automaton has 25453 states and 33195 transitions. Word has length 218 [2023-11-06 21:15:04,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:04,406 INFO L495 AbstractCegarLoop]: Abstraction has 25453 states and 33195 transitions. [2023-11-06 21:15:04,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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 21:15:04,407 INFO L276 IsEmpty]: Start isEmpty. Operand 25453 states and 33195 transitions. [2023-11-06 21:15:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-06 21:15:04,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:04,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:04,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:15:04,456 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:04,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:04,457 INFO L85 PathProgramCache]: Analyzing trace with hash -200508232, now seen corresponding path program 1 times [2023-11-06 21:15:04,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:04,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226978520] [2023-11-06 21:15:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:04,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:04,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226978520] [2023-11-06 21:15:04,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226978520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:04,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:04,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:04,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506839669] [2023-11-06 21:15:04,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:04,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:04,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:04,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:04,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:04,857 INFO L87 Difference]: Start difference. First operand 25453 states and 33195 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 21:15:06,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:06,289 INFO L93 Difference]: Finished difference Result 63394 states and 83978 transitions. [2023-11-06 21:15:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:06,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 221 [2023-11-06 21:15:06,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:06,382 INFO L225 Difference]: With dead ends: 63394 [2023-11-06 21:15:06,382 INFO L226 Difference]: Without dead ends: 37943 [2023-11-06 21:15:06,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:15:06,414 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:06,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 204 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 21:15:06,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37943 states. [2023-11-06 21:15:07,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37943 to 37861. [2023-11-06 21:15:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37861 states, 37860 states have (on average 1.3260433174854729) internal successors, (50204), 37860 states have internal predecessors, (50204), 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 21:15:07,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37861 states to 37861 states and 50204 transitions. [2023-11-06 21:15:07,541 INFO L78 Accepts]: Start accepts. Automaton has 37861 states and 50204 transitions. Word has length 221 [2023-11-06 21:15:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:07,541 INFO L495 AbstractCegarLoop]: Abstraction has 37861 states and 50204 transitions. [2023-11-06 21:15:07,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 21:15:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 37861 states and 50204 transitions. [2023-11-06 21:15:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-06 21:15:07,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:07,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:07,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:15:07,758 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:07,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:07,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1374711229, now seen corresponding path program 1 times [2023-11-06 21:15:07,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:07,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866435295] [2023-11-06 21:15:07,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:07,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:08,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:08,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866435295] [2023-11-06 21:15:08,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866435295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:08,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:08,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:08,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737039530] [2023-11-06 21:15:08,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:08,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:08,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:08,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:08,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:08,336 INFO L87 Difference]: Start difference. First operand 37861 states and 50204 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 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 21:15:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:09,998 INFO L93 Difference]: Finished difference Result 94121 states and 124154 transitions. [2023-11-06 21:15:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:09,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 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 223 [2023-11-06 21:15:09,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:10,120 INFO L225 Difference]: With dead ends: 94121 [2023-11-06 21:15:10,122 INFO L226 Difference]: Without dead ends: 56262 [2023-11-06 21:15:10,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:15:10,145 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 216 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:10,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 158 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:15:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56262 states. [2023-11-06 21:15:11,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56262 to 56205. [2023-11-06 21:15:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56205 states, 56204 states have (on average 1.3104761226958936) internal successors, (73654), 56204 states have internal predecessors, (73654), 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 21:15:11,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56205 states to 56205 states and 73654 transitions. [2023-11-06 21:15:11,687 INFO L78 Accepts]: Start accepts. Automaton has 56205 states and 73654 transitions. Word has length 223 [2023-11-06 21:15:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:11,690 INFO L495 AbstractCegarLoop]: Abstraction has 56205 states and 73654 transitions. [2023-11-06 21:15:11,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 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 21:15:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 56205 states and 73654 transitions. [2023-11-06 21:15:11,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-06 21:15:11,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:11,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:11,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:15:11,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:11,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -870128958, now seen corresponding path program 1 times [2023-11-06 21:15:11,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:11,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27430650] [2023-11-06 21:15:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:12,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:12,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27430650] [2023-11-06 21:15:12,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27430650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:12,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:12,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:12,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118314400] [2023-11-06 21:15:12,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:12,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:12,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:12,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:12,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:12,595 INFO L87 Difference]: Start difference. First operand 56205 states and 73654 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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 21:15:14,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:14,584 INFO L93 Difference]: Finished difference Result 133673 states and 176288 transitions. [2023-11-06 21:15:14,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:14,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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 225 [2023-11-06 21:15:14,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:14,808 INFO L225 Difference]: With dead ends: 133673 [2023-11-06 21:15:14,809 INFO L226 Difference]: Without dead ends: 77470 [2023-11-06 21:15:14,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:15:14,870 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:14,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 200 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 21:15:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77470 states. [2023-11-06 21:15:16,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77470 to 77369. [2023-11-06 21:15:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77369 states, 77368 states have (on average 1.3209078688863614) internal successors, (102196), 77368 states have internal predecessors, (102196), 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 21:15:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77369 states to 77369 states and 102196 transitions. [2023-11-06 21:15:16,345 INFO L78 Accepts]: Start accepts. Automaton has 77369 states and 102196 transitions. Word has length 225 [2023-11-06 21:15:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:16,345 INFO L495 AbstractCegarLoop]: Abstraction has 77369 states and 102196 transitions. [2023-11-06 21:15:16,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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 21:15:16,346 INFO L276 IsEmpty]: Start isEmpty. Operand 77369 states and 102196 transitions. [2023-11-06 21:15:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-06 21:15:16,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:16,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:16,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:15:16,650 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:16,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:16,651 INFO L85 PathProgramCache]: Analyzing trace with hash 62979819, now seen corresponding path program 1 times [2023-11-06 21:15:16,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:16,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44019979] [2023-11-06 21:15:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:16,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 21:15:17,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:17,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44019979] [2023-11-06 21:15:17,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44019979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:17,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:17,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:17,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025550563] [2023-11-06 21:15:17,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:17,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:17,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:17,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:17,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:17,377 INFO L87 Difference]: Start difference. First operand 77369 states and 102196 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 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 21:15:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:19,587 INFO L93 Difference]: Finished difference Result 182216 states and 240238 transitions. [2023-11-06 21:15:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:19,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 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 240 [2023-11-06 21:15:19,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:19,866 INFO L225 Difference]: With dead ends: 182216 [2023-11-06 21:15:19,867 INFO L226 Difference]: Without dead ends: 104849 [2023-11-06 21:15:20,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:15:20,297 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 206 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:20,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 187 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 21:15:20,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104849 states. [2023-11-06 21:15:21,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104849 to 104774. [2023-11-06 21:15:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104774 states, 104773 states have (on average 1.2897693107957202) internal successors, (135133), 104773 states have internal predecessors, (135133), 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 21:15:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104774 states to 104774 states and 135133 transitions. [2023-11-06 21:15:22,694 INFO L78 Accepts]: Start accepts. Automaton has 104774 states and 135133 transitions. Word has length 240 [2023-11-06 21:15:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:22,695 INFO L495 AbstractCegarLoop]: Abstraction has 104774 states and 135133 transitions. [2023-11-06 21:15:22,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 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 21:15:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 104774 states and 135133 transitions. [2023-11-06 21:15:22,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 21:15:22,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:22,779 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:22,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:15:22,780 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:22,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:22,781 INFO L85 PathProgramCache]: Analyzing trace with hash -397059178, now seen corresponding path program 1 times [2023-11-06 21:15:22,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:22,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920967423] [2023-11-06 21:15:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:22,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 21:15:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:23,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920967423] [2023-11-06 21:15:23,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920967423] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:23,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768400414] [2023-11-06 21:15:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:23,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:23,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:23,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:23,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:15:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:24,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:15:24,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 21:15:24,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:24,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768400414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:24,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:24,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-06 21:15:24,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47554197] [2023-11-06 21:15:24,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:24,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:24,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:24,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:24,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:24,297 INFO L87 Difference]: Start difference. First operand 104774 states and 135133 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 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 21:15:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:27,227 INFO L93 Difference]: Finished difference Result 273874 states and 355241 transitions. [2023-11-06 21:15:27,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:27,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 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 247 [2023-11-06 21:15:27,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:27,549 INFO L225 Difference]: With dead ends: 273874 [2023-11-06 21:15:27,549 INFO L226 Difference]: Without dead ends: 169914 [2023-11-06 21:15:27,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:27,586 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 235 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:27,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 165 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:15:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169914 states. [2023-11-06 21:15:30,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169914 to 169904. [2023-11-06 21:15:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169904 states, 169903 states have (on average 1.2758515152763636) internal successors, (216771), 169903 states have internal predecessors, (216771), 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 21:15:30,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169904 states to 169904 states and 216771 transitions. [2023-11-06 21:15:30,528 INFO L78 Accepts]: Start accepts. Automaton has 169904 states and 216771 transitions. Word has length 247 [2023-11-06 21:15:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:30,529 INFO L495 AbstractCegarLoop]: Abstraction has 169904 states and 216771 transitions. [2023-11-06 21:15:30,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 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 21:15:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 169904 states and 216771 transitions. [2023-11-06 21:15:31,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-11-06 21:15:31,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:31,325 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:31,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 21:15:31,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:31,532 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:31,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1467813147, now seen corresponding path program 1 times [2023-11-06 21:15:31,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:31,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628234319] [2023-11-06 21:15:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:31,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-06 21:15:32,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:32,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628234319] [2023-11-06 21:15:32,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628234319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:32,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157589186] [2023-11-06 21:15:32,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:32,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:32,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:32,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:32,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:15:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:32,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:15:32,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-06 21:15:32,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:32,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157589186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:32,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:32,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-06 21:15:32,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494367437] [2023-11-06 21:15:32,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:32,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:32,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:32,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:32,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:32,690 INFO L87 Difference]: Start difference. First operand 169904 states and 216771 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 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 21:15:35,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:35,588 INFO L93 Difference]: Finished difference Result 353531 states and 455087 transitions. [2023-11-06 21:15:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:35,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 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 249 [2023-11-06 21:15:35,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:35,836 INFO L225 Difference]: With dead ends: 353531 [2023-11-06 21:15:35,836 INFO L226 Difference]: Without dead ends: 184035 [2023-11-06 21:15:35,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:35,922 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 223 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:35,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 170 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 21:15:36,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184035 states. [2023-11-06 21:15:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184035 to 184028. [2023-11-06 21:15:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184028 states, 184027 states have (on average 1.188488645687861) internal successors, (218714), 184027 states have internal predecessors, (218714), 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 21:15:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184028 states to 184028 states and 218714 transitions. [2023-11-06 21:15:39,868 INFO L78 Accepts]: Start accepts. Automaton has 184028 states and 218714 transitions. Word has length 249 [2023-11-06 21:15:39,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:39,868 INFO L495 AbstractCegarLoop]: Abstraction has 184028 states and 218714 transitions. [2023-11-06 21:15:39,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 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 21:15:39,868 INFO L276 IsEmpty]: Start isEmpty. Operand 184028 states and 218714 transitions. [2023-11-06 21:15:39,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-06 21:15:39,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:39,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:39,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:40,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:40,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:40,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:40,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1733913638, now seen corresponding path program 1 times [2023-11-06 21:15:40,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:40,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836574232] [2023-11-06 21:15:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:40,802 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-06 21:15:40,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:40,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836574232] [2023-11-06 21:15:40,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836574232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:40,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:40,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:40,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480093341] [2023-11-06 21:15:40,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:40,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:40,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:40,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:40,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:40,808 INFO L87 Difference]: Start difference. First operand 184028 states and 218714 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 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 21:15:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:44,695 INFO L93 Difference]: Finished difference Result 432186 states and 513592 transitions. [2023-11-06 21:15:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:44,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 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 257 [2023-11-06 21:15:44,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:45,153 INFO L225 Difference]: With dead ends: 432186 [2023-11-06 21:15:45,153 INFO L226 Difference]: Without dead ends: 256289 [2023-11-06 21:15:45,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:15:45,253 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 243 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:45,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 216 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:15:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256289 states. [2023-11-06 21:15:50,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256289 to 256257. [2023-11-06 21:15:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256257 states, 256256 states have (on average 1.1862863698801198) internal successors, (303993), 256256 states have internal predecessors, (303993), 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 21:15:50,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256257 states to 256257 states and 303993 transitions. [2023-11-06 21:15:50,727 INFO L78 Accepts]: Start accepts. Automaton has 256257 states and 303993 transitions. Word has length 257 [2023-11-06 21:15:50,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:50,728 INFO L495 AbstractCegarLoop]: Abstraction has 256257 states and 303993 transitions. [2023-11-06 21:15:50,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 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 21:15:50,728 INFO L276 IsEmpty]: Start isEmpty. Operand 256257 states and 303993 transitions. [2023-11-06 21:15:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-11-06 21:15:50,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:50,804 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:50,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:15:50,805 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:50,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:50,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1901719163, now seen corresponding path program 1 times [2023-11-06 21:15:50,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:50,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385790832] [2023-11-06 21:15:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:50,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:15:52,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:52,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385790832] [2023-11-06 21:15:52,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385790832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:52,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833638283] [2023-11-06 21:15:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:52,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:52,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:52,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:52,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d799b-9ec3-4251-8d42-ad20be58c1e1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:15:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:52,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:15:52,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:15:52,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:52,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833638283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:52,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:52,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-06 21:15:52,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990115279] [2023-11-06 21:15:52,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:52,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:52,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:52,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:52,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:52,806 INFO L87 Difference]: Start difference. First operand 256257 states and 303993 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 21:15:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:56,119 INFO L93 Difference]: Finished difference Result 532979 states and 630832 transitions. [2023-11-06 21:15:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:56,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 263 [2023-11-06 21:15:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:56,573 INFO L225 Difference]: With dead ends: 532979 [2023-11-06 21:15:56,573 INFO L226 Difference]: Without dead ends: 297669 [2023-11-06 21:15:56,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 262 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 21:15:56,690 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 258 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:56,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 102 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 21:15:56,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297669 states.