./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i --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_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/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_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/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_7505917c-da1e-41f3-bcaf-62d77ee17edb/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 4f8957d243f60f3b1c8dd5ae8036bb47a7344420b54bde3f58916ec11256e152 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:42:36,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:42:36,800 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:42:36,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:42:36,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:42:36,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:42:36,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:42:36,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:42:36,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:42:36,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:42:36,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:42:36,873 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:42:36,874 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:42:36,876 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:42:36,876 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:42:36,877 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:42:36,877 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:42:36,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:42:36,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:42:36,879 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:42:36,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:42:36,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:42:36,880 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:42:36,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:42:36,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:42:36,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:42:36,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:42:36,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:42:36,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:36,884 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:42:36,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:42:36,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:42:36,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:42:36,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:42:36,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:42:36,887 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:42:36,887 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:42:36,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:42:36,888 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:42:36,888 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_7505917c-da1e-41f3-bcaf-62d77ee17edb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f8957d243f60f3b1c8dd5ae8036bb47a7344420b54bde3f58916ec11256e152 [2023-11-06 22:42:37,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:42:37,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:42:37,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:42:37,231 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:42:37,231 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:42:37,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i [2023-11-06 22:42:40,571 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:42:40,936 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:42:40,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i [2023-11-06 22:42:40,959 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/data/844ddbd8a/fdffdcde28e14a03abc4beabaaf3c107/FLAGf60975e6f [2023-11-06 22:42:40,978 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/data/844ddbd8a/fdffdcde28e14a03abc4beabaaf3c107 [2023-11-06 22:42:40,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:42:40,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:42:40,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:40,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:42:40,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:42:41,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:40" (1/1) ... [2023-11-06 22:42:41,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25703168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:41, skipping insertion in model container [2023-11-06 22:42:41,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:40" (1/1) ... [2023-11-06 22:42:41,087 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:42:41,293 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_7505917c-da1e-41f3-bcaf-62d77ee17edb/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i[916,929] [2023-11-06 22:42:41,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:41,728 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:42:41,741 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_7505917c-da1e-41f3-bcaf-62d77ee17edb/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i[916,929] [2023-11-06 22:42:41,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:42,007 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:42:42,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42 WrapperNode [2023-11-06 22:42:42,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:42,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:42,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:42:42,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:42:42,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (1/1) ... [2023-11-06 22:42:42,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (1/1) ... [2023-11-06 22:42:42,209 INFO L138 Inliner]: procedures = 26, calls = 99, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 871 [2023-11-06 22:42:42,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:42,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:42:42,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:42:42,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:42:42,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (1/1) ... [2023-11-06 22:42:42,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (1/1) ... [2023-11-06 22:42:42,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (1/1) ... [2023-11-06 22:42:42,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (1/1) ... [2023-11-06 22:42:42,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (1/1) ... [2023-11-06 22:42:42,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (1/1) ... [2023-11-06 22:42:42,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (1/1) ... [2023-11-06 22:42:42,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (1/1) ... [2023-11-06 22:42:42,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:42:42,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:42:42,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:42:42,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:42:42,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (1/1) ... [2023-11-06 22:42:42,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:42,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:42,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:42:42,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:42:42,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:42:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:42:42,486 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:42:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:42:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:42:42,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:42:42,670 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:42:42,672 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:42:44,324 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:42:44,335 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:42:44,335 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:42:44,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:44 BoogieIcfgContainer [2023-11-06 22:42:44,338 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:42:44,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:42:44,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:42:44,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:42:44,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:42:40" (1/3) ... [2023-11-06 22:42:44,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245ba889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:44, skipping insertion in model container [2023-11-06 22:42:44,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:42" (2/3) ... [2023-11-06 22:42:44,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245ba889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:44, skipping insertion in model container [2023-11-06 22:42:44,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:44" (3/3) ... [2023-11-06 22:42:44,348 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-62.i [2023-11-06 22:42:44,369 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:42:44,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:42:44,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:42:44,460 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;@8303c15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:42:44,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:42:44,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 244 states have (on average 1.5614754098360655) internal successors, (381), 245 states have internal predecessors, (381), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-06 22:42:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-06 22:42:44,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:44,516 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:44,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:44,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1767987151, now seen corresponding path program 1 times [2023-11-06 22:42:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:44,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660204881] [2023-11-06 22:42:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:44,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:45,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:45,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660204881] [2023-11-06 22:42:45,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:42:45,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868420040] [2023-11-06 22:42:45,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:45,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:45,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:45,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:45,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:42:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:45,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:42:45,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2023-11-06 22:42:45,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:45,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868420040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:45,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:45,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:42:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143155620] [2023-11-06 22:42:45,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:45,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:42:45,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:42:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:42:45,929 INFO L87 Difference]: Start difference. First operand has 333 states, 244 states have (on average 1.5614754098360655) internal successors, (381), 245 states have internal predecessors, (381), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2023-11-06 22:42:46,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:46,018 INFO L93 Difference]: Finished difference Result 659 states and 1186 transitions. [2023-11-06 22:42:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:42:46,021 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) Word has length 575 [2023-11-06 22:42:46,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:46,034 INFO L225 Difference]: With dead ends: 659 [2023-11-06 22:42:46,035 INFO L226 Difference]: Without dead ends: 329 [2023-11-06 22:42:46,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:42:46,048 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:46,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:42:46,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-06 22:42:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2023-11-06 22:42:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 241 states have (on average 1.5518672199170125) internal successors, (374), 241 states have internal predecessors, (374), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-06 22:42:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 546 transitions. [2023-11-06 22:42:46,186 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 546 transitions. Word has length 575 [2023-11-06 22:42:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:46,189 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 546 transitions. [2023-11-06 22:42:46,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2023-11-06 22:42:46,190 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 546 transitions. [2023-11-06 22:42:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-06 22:42:46,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:46,212 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:46,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:46,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:42:46,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:46,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:46,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1497862647, now seen corresponding path program 1 times [2023-11-06 22:42:46,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:46,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084212272] [2023-11-06 22:42:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:46,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:46,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:46,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669636934] [2023-11-06 22:42:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:46,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:46,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:46,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:46,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:42:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:47,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:42:47,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7200 proven. 0 refuted. 0 times theorem prover too weak. 7420 trivial. 0 not checked. [2023-11-06 22:42:47,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:47,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:47,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084212272] [2023-11-06 22:42:47,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:47,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669636934] [2023-11-06 22:42:47,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669636934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:47,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:47,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:47,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18814463] [2023-11-06 22:42:47,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:47,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:47,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:47,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:47,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:47,736 INFO L87 Difference]: Start difference. First operand 329 states and 546 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2023-11-06 22:42:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:47,901 INFO L93 Difference]: Finished difference Result 655 states and 1089 transitions. [2023-11-06 22:42:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:47,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 575 [2023-11-06 22:42:47,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:47,915 INFO L225 Difference]: With dead ends: 655 [2023-11-06 22:42:47,915 INFO L226 Difference]: Without dead ends: 329 [2023-11-06 22:42:47,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:47,918 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 402 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:47,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 527 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:42:47,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-06 22:42:47,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2023-11-06 22:42:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 241 states have (on average 1.5477178423236515) internal successors, (373), 241 states have internal predecessors, (373), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-06 22:42:47,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 545 transitions. [2023-11-06 22:42:47,989 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 545 transitions. Word has length 575 [2023-11-06 22:42:47,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:47,994 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 545 transitions. [2023-11-06 22:42:47,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2023-11-06 22:42:47,996 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 545 transitions. [2023-11-06 22:42:48,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-06 22:42:48,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:48,015 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:48,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:48,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:48,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:48,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash 600469369, now seen corresponding path program 1 times [2023-11-06 22:42:48,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:48,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120167192] [2023-11-06 22:42:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:48,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:48,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:48,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586599245] [2023-11-06 22:42:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:48,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:48,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:48,365 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:48,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:42:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:48,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:42:48,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-06 22:42:49,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:49,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:49,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120167192] [2023-11-06 22:42:49,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:49,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586599245] [2023-11-06 22:42:49,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586599245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:49,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:49,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:49,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015884498] [2023-11-06 22:42:49,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:49,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:49,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:49,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:49,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:49,053 INFO L87 Difference]: Start difference. First operand 329 states and 545 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:42:49,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:49,221 INFO L93 Difference]: Finished difference Result 877 states and 1454 transitions. [2023-11-06 22:42:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:49,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 575 [2023-11-06 22:42:49,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:49,229 INFO L225 Difference]: With dead ends: 877 [2023-11-06 22:42:49,230 INFO L226 Difference]: Without dead ends: 551 [2023-11-06 22:42:49,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:49,232 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 337 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:49,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1126 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:42:49,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-11-06 22:42:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 548. [2023-11-06 22:42:49,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 431 states have (on average 1.568445475638051) internal successors, (676), 432 states have internal predecessors, (676), 114 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (114), 113 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-06 22:42:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 904 transitions. [2023-11-06 22:42:49,295 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 904 transitions. Word has length 575 [2023-11-06 22:42:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:49,297 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 904 transitions. [2023-11-06 22:42:49,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:42:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 904 transitions. [2023-11-06 22:42:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-06 22:42:49,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:49,312 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:49,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:49,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:49,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:49,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:49,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1713470709, now seen corresponding path program 1 times [2023-11-06 22:42:49,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:49,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485179963] [2023-11-06 22:42:49,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:49,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:49,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:49,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652262022] [2023-11-06 22:42:49,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:49,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:49,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:49,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:49,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:42:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:50,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:42:50,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-06 22:42:50,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:50,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:50,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485179963] [2023-11-06 22:42:50,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:50,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652262022] [2023-11-06 22:42:50,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652262022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:50,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:50,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:50,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142829839] [2023-11-06 22:42:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:50,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:50,303 INFO L87 Difference]: Start difference. First operand 548 states and 904 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:42:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:50,374 INFO L93 Difference]: Finished difference Result 1381 states and 2286 transitions. [2023-11-06 22:42:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:50,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 575 [2023-11-06 22:42:50,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:50,384 INFO L225 Difference]: With dead ends: 1381 [2023-11-06 22:42:50,384 INFO L226 Difference]: Without dead ends: 836 [2023-11-06 22:42:50,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:50,388 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 262 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:50,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1304 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:42:50,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-11-06 22:42:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 800. [2023-11-06 22:42:50,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 683 states have (on average 1.6134699853587116) internal successors, (1102), 684 states have internal predecessors, (1102), 114 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (114), 113 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-06 22:42:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1330 transitions. [2023-11-06 22:42:50,459 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1330 transitions. Word has length 575 [2023-11-06 22:42:50,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:50,461 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1330 transitions. [2023-11-06 22:42:50,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:42:50,462 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1330 transitions. [2023-11-06 22:42:50,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-06 22:42:50,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:50,469 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:50,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:50,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:50,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:50,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:50,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1953710455, now seen corresponding path program 1 times [2023-11-06 22:42:50,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:50,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057183949] [2023-11-06 22:42:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:50,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:50,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:50,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627030404] [2023-11-06 22:42:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:50,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:50,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:50,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:50,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:42:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:51,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:42:51,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-06 22:42:51,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:51,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:51,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057183949] [2023-11-06 22:42:51,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:51,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627030404] [2023-11-06 22:42:51,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627030404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:51,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:51,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918777463] [2023-11-06 22:42:51,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:51,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:51,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:51,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:51,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:51,460 INFO L87 Difference]: Start difference. First operand 800 states and 1330 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:42:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:51,608 INFO L93 Difference]: Finished difference Result 2386 states and 3968 transitions. [2023-11-06 22:42:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:51,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 575 [2023-11-06 22:42:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:51,622 INFO L225 Difference]: With dead ends: 2386 [2023-11-06 22:42:51,622 INFO L226 Difference]: Without dead ends: 1589 [2023-11-06 22:42:51,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:51,626 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 533 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:51,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1221 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:42:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2023-11-06 22:42:51,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1587. [2023-11-06 22:42:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1354 states have (on average 1.604135893648449) internal successors, (2172), 1356 states have internal predecessors, (2172), 228 states have call successors, (228), 4 states have call predecessors, (228), 4 states have return successors, (228), 226 states have call predecessors, (228), 228 states have call successors, (228) [2023-11-06 22:42:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2628 transitions. [2023-11-06 22:42:51,804 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2628 transitions. Word has length 575 [2023-11-06 22:42:51,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:51,805 INFO L495 AbstractCegarLoop]: Abstraction has 1587 states and 2628 transitions. [2023-11-06 22:42:51,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:42:51,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2628 transitions. [2023-11-06 22:42:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-06 22:42:51,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:51,814 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:51,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:52,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:52,023 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:52,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash -315303433, now seen corresponding path program 1 times [2023-11-06 22:42:52,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:52,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688995521] [2023-11-06 22:42:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:52,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:52,163 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:52,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441162788] [2023-11-06 22:42:52,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:52,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:52,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:52,165 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:52,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:42:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:52,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:42:52,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-06 22:42:54,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:54,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:54,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688995521] [2023-11-06 22:42:54,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:54,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441162788] [2023-11-06 22:42:54,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441162788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:54,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:54,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:42:54,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011321164] [2023-11-06 22:42:54,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:54,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:42:54,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:42:54,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:54,608 INFO L87 Difference]: Start difference. First operand 1587 states and 2628 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:42:55,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:55,683 INFO L93 Difference]: Finished difference Result 5420 states and 8977 transitions. [2023-11-06 22:42:55,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:42:55,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 575 [2023-11-06 22:42:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:55,710 INFO L225 Difference]: With dead ends: 5420 [2023-11-06 22:42:55,711 INFO L226 Difference]: Without dead ends: 3836 [2023-11-06 22:42:55,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:42:55,717 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 929 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:55,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 1882 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:42:55,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3836 states. [2023-11-06 22:42:56,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3836 to 3764. [2023-11-06 22:42:56,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3212 states have (on average 1.5921544209215441) internal successors, (5114), 3216 states have internal predecessors, (5114), 542 states have call successors, (542), 9 states have call predecessors, (542), 9 states have return successors, (542), 538 states have call predecessors, (542), 542 states have call successors, (542) [2023-11-06 22:42:56,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 6198 transitions. [2023-11-06 22:42:56,136 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 6198 transitions. Word has length 575 [2023-11-06 22:42:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:56,138 INFO L495 AbstractCegarLoop]: Abstraction has 3764 states and 6198 transitions. [2023-11-06 22:42:56,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:42:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 6198 transitions. [2023-11-06 22:42:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-11-06 22:42:56,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:56,145 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:56,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:56,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:56,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:56,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash -865281053, now seen corresponding path program 1 times [2023-11-06 22:42:56,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:56,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214842958] [2023-11-06 22:42:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:56,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:56,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:56,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259133549] [2023-11-06 22:42:56,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:56,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:56,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:56,458 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:56,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:42:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:57,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:42:57,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-06 22:42:57,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:57,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:57,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214842958] [2023-11-06 22:42:57,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:57,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259133549] [2023-11-06 22:42:57,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259133549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:57,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:57,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:57,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646126675] [2023-11-06 22:42:57,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:57,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:57,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:57,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:57,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:57,135 INFO L87 Difference]: Start difference. First operand 3764 states and 6198 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:42:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:57,433 INFO L93 Difference]: Finished difference Result 9236 states and 15130 transitions. [2023-11-06 22:42:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:57,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 576 [2023-11-06 22:42:57,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:57,477 INFO L225 Difference]: With dead ends: 9236 [2023-11-06 22:42:57,477 INFO L226 Difference]: Without dead ends: 5890 [2023-11-06 22:42:57,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:57,487 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 236 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:57,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1252 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:42:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5890 states. [2023-11-06 22:42:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5890 to 5880. [2023-11-06 22:42:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5880 states, 5112 states have (on average 1.5833333333333333) internal successors, (8094), 5124 states have internal predecessors, (8094), 750 states have call successors, (750), 17 states have call predecessors, (750), 17 states have return successors, (750), 738 states have call predecessors, (750), 750 states have call successors, (750) [2023-11-06 22:42:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 9594 transitions. [2023-11-06 22:42:58,025 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 9594 transitions. Word has length 576 [2023-11-06 22:42:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:58,027 INFO L495 AbstractCegarLoop]: Abstraction has 5880 states and 9594 transitions. [2023-11-06 22:42:58,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:42:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 9594 transitions. [2023-11-06 22:42:58,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-11-06 22:42:58,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:58,035 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:58,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:58,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:58,244 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:58,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:58,245 INFO L85 PathProgramCache]: Analyzing trace with hash -441634331, now seen corresponding path program 1 times [2023-11-06 22:42:58,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:58,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550063157] [2023-11-06 22:42:58,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:58,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:58,347 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:58,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100622939] [2023-11-06 22:42:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:58,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:58,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:58,349 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:58,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:42:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:58,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:42:58,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-06 22:42:59,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:59,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:59,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550063157] [2023-11-06 22:42:59,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100622939] [2023-11-06 22:42:59,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100622939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:59,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:59,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:42:59,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140088952] [2023-11-06 22:42:59,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:59,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:42:59,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:59,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:42:59,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:42:59,021 INFO L87 Difference]: Start difference. First operand 5880 states and 9594 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:42:59,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:59,957 INFO L93 Difference]: Finished difference Result 16096 states and 26234 transitions. [2023-11-06 22:42:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:42:59,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 576 [2023-11-06 22:42:59,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:00,032 INFO L225 Difference]: With dead ends: 16096 [2023-11-06 22:43:00,032 INFO L226 Difference]: Without dead ends: 10554 [2023-11-06 22:43:00,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:43:00,048 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 1375 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:00,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 2436 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:43:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10554 states. [2023-11-06 22:43:00,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10554 to 10514. [2023-11-06 22:43:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10514 states, 9122 states have (on average 1.5788204341153256) internal successors, (14402), 9150 states have internal predecessors, (14402), 1358 states have call successors, (1358), 33 states have call predecessors, (1358), 33 states have return successors, (1358), 1330 states have call predecessors, (1358), 1358 states have call successors, (1358) [2023-11-06 22:43:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10514 states to 10514 states and 17118 transitions. [2023-11-06 22:43:00,913 INFO L78 Accepts]: Start accepts. Automaton has 10514 states and 17118 transitions. Word has length 576 [2023-11-06 22:43:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:00,914 INFO L495 AbstractCegarLoop]: Abstraction has 10514 states and 17118 transitions. [2023-11-06 22:43:00,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:43:00,916 INFO L276 IsEmpty]: Start isEmpty. Operand 10514 states and 17118 transitions. [2023-11-06 22:43:00,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-11-06 22:43:00,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:00,924 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:00,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:01,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:01,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:01,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash 819282919, now seen corresponding path program 1 times [2023-11-06 22:43:01,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:01,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367721193] [2023-11-06 22:43:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:01,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:01,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953727987] [2023-11-06 22:43:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:01,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:01,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:01,229 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:01,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:43:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:01,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:43:01,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 6273 proven. 177 refuted. 0 times theorem prover too weak. 8170 trivial. 0 not checked. [2023-11-06 22:43:02,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 78 proven. 177 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-06 22:43:03,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:03,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367721193] [2023-11-06 22:43:03,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:03,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953727987] [2023-11-06 22:43:03,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953727987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:03,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:03,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:43:03,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099786493] [2023-11-06 22:43:03,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:03,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:43:03,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:03,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:43:03,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:43:03,156 INFO L87 Difference]: Start difference. First operand 10514 states and 17118 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2023-11-06 22:43:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:04,257 INFO L93 Difference]: Finished difference Result 16608 states and 26945 transitions. [2023-11-06 22:43:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:43:04,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) Word has length 576 [2023-11-06 22:43:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:04,289 INFO L225 Difference]: With dead ends: 16608 [2023-11-06 22:43:04,289 INFO L226 Difference]: Without dead ends: 6618 [2023-11-06 22:43:04,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1154 GetRequests, 1144 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:43:04,312 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 312 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:04,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1326 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:43:04,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6618 states. [2023-11-06 22:43:04,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6618 to 6566. [2023-11-06 22:43:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6566 states, 5573 states have (on average 1.5636102637717566) internal successors, (8714), 5585 states have internal predecessors, (8714), 942 states have call successors, (942), 50 states have call predecessors, (942), 50 states have return successors, (942), 930 states have call predecessors, (942), 942 states have call successors, (942) [2023-11-06 22:43:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6566 states to 6566 states and 10598 transitions. [2023-11-06 22:43:04,836 INFO L78 Accepts]: Start accepts. Automaton has 6566 states and 10598 transitions. Word has length 576 [2023-11-06 22:43:04,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:04,838 INFO L495 AbstractCegarLoop]: Abstraction has 6566 states and 10598 transitions. [2023-11-06 22:43:04,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2023-11-06 22:43:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 6566 states and 10598 transitions. [2023-11-06 22:43:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2023-11-06 22:43:04,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:04,848 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:04,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:05,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:05,059 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:05,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:05,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1761939806, now seen corresponding path program 1 times [2023-11-06 22:43:05,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:05,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874679465] [2023-11-06 22:43:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:05,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:05,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:05,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863213750] [2023-11-06 22:43:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:05,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:05,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:05,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:05,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:43:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:05,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 1480 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:43:05,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 6525 proven. 171 refuted. 0 times theorem prover too weak. 7924 trivial. 0 not checked. [2023-11-06 22:43:06,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 84 proven. 171 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-06 22:43:06,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:06,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874679465] [2023-11-06 22:43:06,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:06,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863213750] [2023-11-06 22:43:06,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863213750] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:06,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:06,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:43:06,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183336667] [2023-11-06 22:43:06,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:06,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:43:06,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:06,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:43:06,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:43:06,977 INFO L87 Difference]: Start difference. First operand 6566 states and 10598 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2023-11-06 22:43:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:07,779 INFO L93 Difference]: Finished difference Result 9880 states and 15938 transitions. [2023-11-06 22:43:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:43:07,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) Word has length 577 [2023-11-06 22:43:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:07,793 INFO L225 Difference]: With dead ends: 9880 [2023-11-06 22:43:07,793 INFO L226 Difference]: Without dead ends: 3800 [2023-11-06 22:43:07,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1146 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:43:07,805 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 357 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:07,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1114 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:43:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2023-11-06 22:43:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3764. [2023-11-06 22:43:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3010 states have (on average 1.5182724252491695) internal successors, (4570), 3014 states have internal predecessors, (4570), 718 states have call successors, (718), 35 states have call predecessors, (718), 35 states have return successors, (718), 714 states have call predecessors, (718), 718 states have call successors, (718) [2023-11-06 22:43:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 6006 transitions. [2023-11-06 22:43:08,117 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 6006 transitions. Word has length 577 [2023-11-06 22:43:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:08,119 INFO L495 AbstractCegarLoop]: Abstraction has 3764 states and 6006 transitions. [2023-11-06 22:43:08,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2023-11-06 22:43:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 6006 transitions. [2023-11-06 22:43:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-11-06 22:43:08,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:08,125 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:08,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:08,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:43:08,335 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:08,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash 788921497, now seen corresponding path program 1 times [2023-11-06 22:43:08,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:08,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423287223] [2023-11-06 22:43:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:08,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:08,420 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:08,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772861036] [2023-11-06 22:43:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:08,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:08,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:08,423 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:08,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:43:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:09,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 1480 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:43:09,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 3973 proven. 39 refuted. 0 times theorem prover too weak. 10608 trivial. 0 not checked. [2023-11-06 22:43:09,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 216 proven. 39 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-06 22:43:09,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423287223] [2023-11-06 22:43:09,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772861036] [2023-11-06 22:43:09,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772861036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:09,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:09,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:43:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465622077] [2023-11-06 22:43:09,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:09,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:43:09,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:09,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:43:09,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:43:09,723 INFO L87 Difference]: Start difference. First operand 3764 states and 6006 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-11-06 22:43:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:10,882 INFO L93 Difference]: Finished difference Result 4728 states and 7516 transitions. [2023-11-06 22:43:10,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:43:10,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 580 [2023-11-06 22:43:10,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:10,890 INFO L225 Difference]: With dead ends: 4728 [2023-11-06 22:43:10,890 INFO L226 Difference]: Without dead ends: 1271 [2023-11-06 22:43:10,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1162 GetRequests, 1152 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:43:10,898 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 686 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:10,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1326 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:43:10,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2023-11-06 22:43:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1253. [2023-11-06 22:43:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 978 states have (on average 1.4897750511247443) internal successors, (1457), 978 states have internal predecessors, (1457), 258 states have call successors, (258), 16 states have call predecessors, (258), 16 states have return successors, (258), 258 states have call predecessors, (258), 258 states have call successors, (258) [2023-11-06 22:43:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1973 transitions. [2023-11-06 22:43:10,996 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1973 transitions. Word has length 580 [2023-11-06 22:43:10,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:10,997 INFO L495 AbstractCegarLoop]: Abstraction has 1253 states and 1973 transitions. [2023-11-06 22:43:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-11-06 22:43:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1973 transitions. [2023-11-06 22:43:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2023-11-06 22:43:11,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:11,003 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:11,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:11,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:11,218 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:11,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash -21335149, now seen corresponding path program 1 times [2023-11-06 22:43:11,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:11,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297240378] [2023-11-06 22:43:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:11,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:11,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:11,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986540012] [2023-11-06 22:43:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:11,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:11,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:11,328 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:11,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:43:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:11,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:43:11,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-06 22:43:13,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:13,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:13,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297240378] [2023-11-06 22:43:13,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:13,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986540012] [2023-11-06 22:43:13,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986540012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:13,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:13,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:43:13,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380014474] [2023-11-06 22:43:13,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:13,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:43:13,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:13,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:43:13,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:43:13,755 INFO L87 Difference]: Start difference. First operand 1253 states and 1973 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:43:14,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:14,253 INFO L93 Difference]: Finished difference Result 3337 states and 5260 transitions. [2023-11-06 22:43:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:43:14,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 581 [2023-11-06 22:43:14,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:14,261 INFO L225 Difference]: With dead ends: 3337 [2023-11-06 22:43:14,261 INFO L226 Difference]: Without dead ends: 2266 [2023-11-06 22:43:14,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:43:14,265 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 734 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:14,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1207 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:43:14,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2023-11-06 22:43:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 2264. [2023-11-06 22:43:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 1805 states have (on average 1.4952908587257618) internal successors, (2699), 1805 states have internal predecessors, (2699), 430 states have call successors, (430), 28 states have call predecessors, (430), 28 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2023-11-06 22:43:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3559 transitions. [2023-11-06 22:43:14,452 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3559 transitions. Word has length 581 [2023-11-06 22:43:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:14,454 INFO L495 AbstractCegarLoop]: Abstraction has 2264 states and 3559 transitions. [2023-11-06 22:43:14,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:43:14,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3559 transitions. [2023-11-06 22:43:14,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2023-11-06 22:43:14,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:14,465 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:14,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:14,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:43:14,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:14,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:14,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1370943589, now seen corresponding path program 1 times [2023-11-06 22:43:14,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:14,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693544217] [2023-11-06 22:43:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:14,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:14,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:14,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223084651] [2023-11-06 22:43:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:14,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:14,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:14,760 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:14,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:43:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:15,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:43:15,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 4945 proven. 201 refuted. 0 times theorem prover too weak. 9474 trivial. 0 not checked. [2023-11-06 22:43:16,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 54 proven. 201 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-06 22:43:16,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:16,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693544217] [2023-11-06 22:43:16,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:16,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223084651] [2023-11-06 22:43:16,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223084651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:16,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:16,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:43:16,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453102657] [2023-11-06 22:43:16,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:16,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:43:16,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:16,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:43:16,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:43:16,625 INFO L87 Difference]: Start difference. First operand 2264 states and 3559 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-11-06 22:43:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:17,350 INFO L93 Difference]: Finished difference Result 4396 states and 6876 transitions. [2023-11-06 22:43:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:43:17,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) Word has length 582 [2023-11-06 22:43:17,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:17,360 INFO L225 Difference]: With dead ends: 4396 [2023-11-06 22:43:17,360 INFO L226 Difference]: Without dead ends: 2324 [2023-11-06 22:43:17,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1166 GetRequests, 1156 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:43:17,366 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 602 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:17,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1112 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:43:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2023-11-06 22:43:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 2284. [2023-11-06 22:43:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 1820 states have (on average 1.4807692307692308) internal successors, (2695), 1820 states have internal predecessors, (2695), 430 states have call successors, (430), 33 states have call predecessors, (430), 33 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2023-11-06 22:43:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3555 transitions. [2023-11-06 22:43:17,572 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3555 transitions. Word has length 582 [2023-11-06 22:43:17,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:17,574 INFO L495 AbstractCegarLoop]: Abstraction has 2284 states and 3555 transitions. [2023-11-06 22:43:17,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-11-06 22:43:17,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3555 transitions. [2023-11-06 22:43:17,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-11-06 22:43:17,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:17,581 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:17,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:17,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:43:17,791 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:17,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1111142705, now seen corresponding path program 1 times [2023-11-06 22:43:17,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:17,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783646181] [2023-11-06 22:43:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:17,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:17,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81651967] [2023-11-06 22:43:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:17,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:17,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:17,878 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:17,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:43:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:18,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:43:18,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 5325 proven. 195 refuted. 0 times theorem prover too weak. 9100 trivial. 0 not checked. [2023-11-06 22:43:19,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 60 proven. 195 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-06 22:43:19,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783646181] [2023-11-06 22:43:19,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81651967] [2023-11-06 22:43:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81651967] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:19,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:19,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:43:19,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203287384] [2023-11-06 22:43:19,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:19,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:43:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:43:19,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:43:19,767 INFO L87 Difference]: Start difference. First operand 2284 states and 3555 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2023-11-06 22:43:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:20,453 INFO L93 Difference]: Finished difference Result 4427 states and 6849 transitions. [2023-11-06 22:43:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:43:20,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) Word has length 583 [2023-11-06 22:43:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:20,463 INFO L225 Difference]: With dead ends: 4427 [2023-11-06 22:43:20,463 INFO L226 Difference]: Without dead ends: 2345 [2023-11-06 22:43:20,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1168 GetRequests, 1158 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:43:20,468 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 586 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:20,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1094 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:43:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-11-06 22:43:20,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 2295. [2023-11-06 22:43:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 1826 states have (on average 1.4589266155531215) internal successors, (2664), 1826 states have internal predecessors, (2664), 430 states have call successors, (430), 38 states have call predecessors, (430), 38 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2023-11-06 22:43:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3524 transitions. [2023-11-06 22:43:20,697 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3524 transitions. Word has length 583 [2023-11-06 22:43:20,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:20,698 INFO L495 AbstractCegarLoop]: Abstraction has 2295 states and 3524 transitions. [2023-11-06 22:43:20,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2023-11-06 22:43:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3524 transitions. [2023-11-06 22:43:20,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-11-06 22:43:20,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:20,705 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:20,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:20,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:20,914 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:20,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash 613160357, now seen corresponding path program 1 times [2023-11-06 22:43:20,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:20,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879756690] [2023-11-06 22:43:20,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:20,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:21,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:21,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216169428] [2023-11-06 22:43:21,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:21,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:21,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:21,003 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:21,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:43:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:21,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:43:21,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-06 22:43:21,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:21,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:21,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879756690] [2023-11-06 22:43:21,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:21,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216169428] [2023-11-06 22:43:21,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216169428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:21,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:21,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:43:21,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209109560] [2023-11-06 22:43:21,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:21,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:43:21,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:21,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:43:21,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:43:21,796 INFO L87 Difference]: Start difference. First operand 2295 states and 3524 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:43:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:22,317 INFO L93 Difference]: Finished difference Result 6237 states and 9578 transitions. [2023-11-06 22:43:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:43:22,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 584 [2023-11-06 22:43:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:22,335 INFO L225 Difference]: With dead ends: 6237 [2023-11-06 22:43:22,335 INFO L226 Difference]: Without dead ends: 4273 [2023-11-06 22:43:22,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:43:22,345 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 536 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:22,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 2291 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:43:22,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2023-11-06 22:43:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 4271. [2023-11-06 22:43:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 3426 states have (on average 1.4603035610040864) internal successors, (5003), 3426 states have internal predecessors, (5003), 774 states have call successors, (774), 70 states have call predecessors, (774), 70 states have return successors, (774), 774 states have call predecessors, (774), 774 states have call successors, (774) [2023-11-06 22:43:22,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 6551 transitions. [2023-11-06 22:43:22,781 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 6551 transitions. Word has length 584 [2023-11-06 22:43:22,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:22,783 INFO L495 AbstractCegarLoop]: Abstraction has 4271 states and 6551 transitions. [2023-11-06 22:43:22,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:43:22,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 6551 transitions. [2023-11-06 22:43:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-11-06 22:43:22,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:22,792 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:22,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:23,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:23,007 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:23,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:23,007 INFO L85 PathProgramCache]: Analyzing trace with hash -975187545, now seen corresponding path program 1 times [2023-11-06 22:43:23,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:23,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291711434] [2023-11-06 22:43:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:23,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:23,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:23,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045168422] [2023-11-06 22:43:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:23,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:23,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:23,092 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:23,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:43:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:23,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:43:23,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 1075 proven. 246 refuted. 0 times theorem prover too weak. 13299 trivial. 0 not checked. [2023-11-06 22:43:24,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 9 proven. 246 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-06 22:43:25,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:25,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291711434] [2023-11-06 22:43:25,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:25,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045168422] [2023-11-06 22:43:25,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045168422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:25,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:25,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2023-11-06 22:43:25,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104361321] [2023-11-06 22:43:25,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:25,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:43:25,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:25,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:43:25,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:43:25,378 INFO L87 Difference]: Start difference. First operand 4271 states and 6551 transitions. Second operand has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 3 states have call successors, (168), 2 states have call predecessors, (168), 4 states have return successors, (169), 3 states have call predecessors, (169), 3 states have call successors, (169) [2023-11-06 22:43:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:26,569 INFO L93 Difference]: Finished difference Result 8363 states and 12751 transitions. [2023-11-06 22:43:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:43:26,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 3 states have call successors, (168), 2 states have call predecessors, (168), 4 states have return successors, (169), 3 states have call predecessors, (169), 3 states have call successors, (169) Word has length 584 [2023-11-06 22:43:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:26,583 INFO L225 Difference]: With dead ends: 8363 [2023-11-06 22:43:26,584 INFO L226 Difference]: Without dead ends: 4397 [2023-11-06 22:43:26,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1156 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:43:26,592 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 506 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:26,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 2284 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:43:26,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2023-11-06 22:43:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4307. [2023-11-06 22:43:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4307 states, 3453 states have (on average 1.4514914567043151) internal successors, (5012), 3453 states have internal predecessors, (5012), 774 states have call successors, (774), 79 states have call predecessors, (774), 79 states have return successors, (774), 774 states have call predecessors, (774), 774 states have call successors, (774) [2023-11-06 22:43:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 6560 transitions. [2023-11-06 22:43:27,162 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 6560 transitions. Word has length 584 [2023-11-06 22:43:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:27,164 INFO L495 AbstractCegarLoop]: Abstraction has 4307 states and 6560 transitions. [2023-11-06 22:43:27,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 3 states have call successors, (168), 2 states have call predecessors, (168), 4 states have return successors, (169), 3 states have call predecessors, (169), 3 states have call successors, (169) [2023-11-06 22:43:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 6560 transitions. [2023-11-06 22:43:27,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-11-06 22:43:27,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:27,174 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:27,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:27,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:43:27,385 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:27,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:27,386 INFO L85 PathProgramCache]: Analyzing trace with hash 948040489, now seen corresponding path program 1 times [2023-11-06 22:43:27,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:27,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727469431] [2023-11-06 22:43:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:27,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:27,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:27,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482803738] [2023-11-06 22:43:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:27,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:27,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:27,500 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:27,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:43:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:28,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:43:28,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 5673 proven. 189 refuted. 0 times theorem prover too weak. 8758 trivial. 0 not checked. [2023-11-06 22:43:30,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 66 proven. 189 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-06 22:43:31,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:31,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727469431] [2023-11-06 22:43:31,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:31,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482803738] [2023-11-06 22:43:31,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482803738] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:31,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:31,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-06 22:43:31,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572449790] [2023-11-06 22:43:31,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:31,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:43:31,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:31,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:43:31,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:43:31,027 INFO L87 Difference]: Start difference. First operand 4307 states and 6560 transitions. Second operand has 16 states, 16 states have (on average 16.0625) internal successors, (257), 16 states have internal predecessors, (257), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-11-06 22:43:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:36,247 INFO L93 Difference]: Finished difference Result 15744 states and 23877 transitions. [2023-11-06 22:43:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-06 22:43:36,249 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.0625) internal successors, (257), 16 states have internal predecessors, (257), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) Word has length 584 [2023-11-06 22:43:36,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:36,276 INFO L225 Difference]: With dead ends: 15744 [2023-11-06 22:43:36,276 INFO L226 Difference]: Without dead ends: 11651 [2023-11-06 22:43:36,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1159 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=598, Invalid=1382, Unknown=0, NotChecked=0, Total=1980 [2023-11-06 22:43:36,283 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 5439 mSDsluCounter, 5554 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 1651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5464 SdHoareTripleChecker+Valid, 5972 SdHoareTripleChecker+Invalid, 3830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1651 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:36,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5464 Valid, 5972 Invalid, 3830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1651 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-06 22:43:36,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11651 states. [2023-11-06 22:43:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11651 to 7319. [2023-11-06 22:43:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7319 states, 6175 states have (on average 1.4620242914979757) internal successors, (9028), 6187 states have internal predecessors, (9028), 1014 states have call successors, (1014), 129 states have call predecessors, (1014), 129 states have return successors, (1014), 1002 states have call predecessors, (1014), 1014 states have call successors, (1014) [2023-11-06 22:43:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7319 states to 7319 states and 11056 transitions. [2023-11-06 22:43:37,189 INFO L78 Accepts]: Start accepts. Automaton has 7319 states and 11056 transitions. Word has length 584 [2023-11-06 22:43:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:37,190 INFO L495 AbstractCegarLoop]: Abstraction has 7319 states and 11056 transitions. [2023-11-06 22:43:37,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.0625) internal successors, (257), 16 states have internal predecessors, (257), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-11-06 22:43:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7319 states and 11056 transitions. [2023-11-06 22:43:37,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-11-06 22:43:37,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:37,196 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:37,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:37,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:37,407 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:37,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:37,407 INFO L85 PathProgramCache]: Analyzing trace with hash -201323543, now seen corresponding path program 1 times [2023-11-06 22:43:37,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:37,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914733594] [2023-11-06 22:43:37,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:37,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:37,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:37,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110564450] [2023-11-06 22:43:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:37,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:37,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:37,492 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:37,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:43:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:38,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:43:38,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 8681 proven. 417 refuted. 0 times theorem prover too weak. 5522 trivial. 0 not checked. [2023-11-06 22:43:40,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 228 proven. 279 refuted. 0 times theorem prover too weak. 14113 trivial. 0 not checked. [2023-11-06 22:43:42,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:42,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914733594] [2023-11-06 22:43:42,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:42,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110564450] [2023-11-06 22:43:42,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110564450] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:42,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:42,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2023-11-06 22:43:42,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120187497] [2023-11-06 22:43:42,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:42,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:43:42,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:42,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:43:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:43:42,304 INFO L87 Difference]: Start difference. First operand 7319 states and 11056 transitions. Second operand has 28 states, 28 states have (on average 10.285714285714286) internal successors, (288), 28 states have internal predecessors, (288), 8 states have call successors, (138), 4 states have call predecessors, (138), 9 states have return successors, (139), 8 states have call predecessors, (139), 8 states have call successors, (139) [2023-11-06 22:43:49,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:49,808 INFO L93 Difference]: Finished difference Result 29516 states and 43932 transitions. [2023-11-06 22:43:49,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-06 22:43:49,808 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.285714285714286) internal successors, (288), 28 states have internal predecessors, (288), 8 states have call successors, (138), 4 states have call predecessors, (138), 9 states have return successors, (139), 8 states have call predecessors, (139), 8 states have call successors, (139) Word has length 584 [2023-11-06 22:43:49,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:49,852 INFO L225 Difference]: With dead ends: 29516 [2023-11-06 22:43:49,852 INFO L226 Difference]: Without dead ends: 22567 [2023-11-06 22:43:49,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1149 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2048 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1693, Invalid=5447, Unknown=0, NotChecked=0, Total=7140 [2023-11-06 22:43:49,867 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 5112 mSDsluCounter, 3781 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 1491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5176 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 4480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1491 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:49,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5176 Valid, 4343 Invalid, 4480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1491 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-06 22:43:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22567 states. [2023-11-06 22:43:51,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22567 to 17487. [2023-11-06 22:43:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17487 states, 15016 states have (on average 1.4563132658497602) internal successors, (21868), 15068 states have internal predecessors, (21868), 2070 states have call successors, (2070), 400 states have call predecessors, (2070), 400 states have return successors, (2070), 2018 states have call predecessors, (2070), 2070 states have call successors, (2070) [2023-11-06 22:43:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17487 states to 17487 states and 26008 transitions. [2023-11-06 22:43:51,856 INFO L78 Accepts]: Start accepts. Automaton has 17487 states and 26008 transitions. Word has length 584 [2023-11-06 22:43:51,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:51,857 INFO L495 AbstractCegarLoop]: Abstraction has 17487 states and 26008 transitions. [2023-11-06 22:43:51,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.285714285714286) internal successors, (288), 28 states have internal predecessors, (288), 8 states have call successors, (138), 4 states have call predecessors, (138), 9 states have return successors, (139), 8 states have call predecessors, (139), 8 states have call successors, (139) [2023-11-06 22:43:51,857 INFO L276 IsEmpty]: Start isEmpty. Operand 17487 states and 26008 transitions. [2023-11-06 22:43:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-11-06 22:43:51,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:51,869 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:51,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:52,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:43:52,078 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:52,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:52,079 INFO L85 PathProgramCache]: Analyzing trace with hash 151764839, now seen corresponding path program 1 times [2023-11-06 22:43:52,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:52,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697588363] [2023-11-06 22:43:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:52,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:52,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:52,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732995600] [2023-11-06 22:43:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:52,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:52,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:52,186 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:52,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:43:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:53,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:43:53,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-06 22:43:53,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:53,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697588363] [2023-11-06 22:43:53,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732995600] [2023-11-06 22:43:53,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732995600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:53,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:53,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:43:53,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881315459] [2023-11-06 22:43:53,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:53,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:43:53,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:43:53,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:43:53,942 INFO L87 Difference]: Start difference. First operand 17487 states and 26008 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:43:55,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:55,685 INFO L93 Difference]: Finished difference Result 34952 states and 52002 transitions. [2023-11-06 22:43:55,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:43:55,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 584 [2023-11-06 22:43:55,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:55,720 INFO L225 Difference]: With dead ends: 34952 [2023-11-06 22:43:55,720 INFO L226 Difference]: Without dead ends: 17693 [2023-11-06 22:43:55,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:43:55,741 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 369 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:55,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1478 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:43:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17693 states. [2023-11-06 22:43:57,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17693 to 17487. [2023-11-06 22:43:57,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17487 states, 15016 states have (on average 1.4554475226425148) internal successors, (21855), 15068 states have internal predecessors, (21855), 2070 states have call successors, (2070), 400 states have call predecessors, (2070), 400 states have return successors, (2070), 2018 states have call predecessors, (2070), 2070 states have call successors, (2070) [2023-11-06 22:43:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17487 states to 17487 states and 25995 transitions. [2023-11-06 22:43:57,222 INFO L78 Accepts]: Start accepts. Automaton has 17487 states and 25995 transitions. Word has length 584 [2023-11-06 22:43:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:57,223 INFO L495 AbstractCegarLoop]: Abstraction has 17487 states and 25995 transitions. [2023-11-06 22:43:57,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-06 22:43:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 17487 states and 25995 transitions. [2023-11-06 22:43:57,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-06 22:43:57,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:57,231 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:57,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:57,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:57,442 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:57,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1755331704, now seen corresponding path program 1 times [2023-11-06 22:43:57,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:57,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345231229] [2023-11-06 22:43:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:57,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:57,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:57,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814186570] [2023-11-06 22:43:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:57,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:57,525 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:57,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:43:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:58,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:43:58,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 1695 proven. 240 refuted. 0 times theorem prover too weak. 12685 trivial. 0 not checked. [2023-11-06 22:44:00,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 15 proven. 240 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-06 22:44:01,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:01,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345231229] [2023-11-06 22:44:01,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:01,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814186570] [2023-11-06 22:44:01,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814186570] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:01,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:44:01,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-06 22:44:01,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774997381] [2023-11-06 22:44:01,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:01,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:44:01,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:01,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:44:01,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:44:01,138 INFO L87 Difference]: Start difference. First operand 17487 states and 25995 transitions. Second operand has 14 states, 14 states have (on average 16.428571428571427) internal successors, (230), 14 states have internal predecessors, (230), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-11-06 22:44:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:04,937 INFO L93 Difference]: Finished difference Result 35378 states and 52385 transitions. [2023-11-06 22:44:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:44:04,938 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.428571428571427) internal successors, (230), 14 states have internal predecessors, (230), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) Word has length 585 [2023-11-06 22:44:04,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:04,970 INFO L225 Difference]: With dead ends: 35378 [2023-11-06 22:44:04,970 INFO L226 Difference]: Without dead ends: 18106 [2023-11-06 22:44:04,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1187 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:44:04,994 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 2616 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2616 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:04,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2616 Valid, 2068 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 22:44:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18106 states. [2023-11-06 22:44:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18106 to 18078. [2023-11-06 22:44:06,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18078 states, 15474 states have (on average 1.445909267157813) internal successors, (22374), 15538 states have internal predecessors, (22374), 2130 states have call successors, (2130), 473 states have call predecessors, (2130), 473 states have return successors, (2130), 2066 states have call predecessors, (2130), 2130 states have call successors, (2130) [2023-11-06 22:44:07,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18078 states to 18078 states and 26634 transitions. [2023-11-06 22:44:07,003 INFO L78 Accepts]: Start accepts. Automaton has 18078 states and 26634 transitions. Word has length 585 [2023-11-06 22:44:07,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:07,004 INFO L495 AbstractCegarLoop]: Abstraction has 18078 states and 26634 transitions. [2023-11-06 22:44:07,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.428571428571427) internal successors, (230), 14 states have internal predecessors, (230), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-11-06 22:44:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 18078 states and 26634 transitions. [2023-11-06 22:44:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-11-06 22:44:07,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:07,012 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:07,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:07,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:07,222 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:07,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:07,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1972233291, now seen corresponding path program 1 times [2023-11-06 22:44:07,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:07,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648311684] [2023-11-06 22:44:07,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:07,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:07,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:07,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387305388] [2023-11-06 22:44:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:07,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:07,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:07,310 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:07,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7505917c-da1e-41f3-bcaf-62d77ee17edb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:44:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:08,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:44:08,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 8995 proven. 246 refuted. 0 times theorem prover too weak. 5379 trivial. 0 not checked. [2023-11-06 22:44:24,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:27,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:27,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648311684] [2023-11-06 22:44:27,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:44:27,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387305388] [2023-11-06 22:44:27,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387305388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:27,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:27,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-06 22:44:27,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704441857] [2023-11-06 22:44:27,406 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:27,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:44:27,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:44:27,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:44:27,408 INFO L87 Difference]: Start difference. First operand 18078 states and 26634 transitions. Second operand has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 4 states have call successors, (86), 4 states have call predecessors, (86), 6 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2023-11-06 22:44:37,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:44:39,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:44:42,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:44:44,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:44:47,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:44:49,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:44:51,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:44:54,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:44:57,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:44:59,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:45:01,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:03,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:07,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:45:09,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:11,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:14,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:16,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:18,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:20,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:25,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:29,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:32,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:34,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:36,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:38,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:40,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:42,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:44,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:46,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:48,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:51,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:53,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:55,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:58,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:45:59,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:46:01,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:46:04,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:46:06,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:46:09,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:46:11,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:46:13,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:46:15,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:46:17,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:46:19,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]