./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/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_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/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_31c10aba-90b9-44fc-9920-a9f50b75aa58/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 f2dab74649212a3ffb00bb2114fde15cc6c5343aaff8c111997aa1541045c9bd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:30:56,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:30:56,627 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:30:56,634 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:30:56,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:30:56,664 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:30:56,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:30:56,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:30:56,666 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:30:56,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:30:56,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:30:56,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:30:56,669 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:30:56,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:30:56,670 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:30:56,671 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:30:56,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:30:56,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:30:56,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:30:56,674 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:30:56,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:30:56,675 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:30:56,675 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:30:56,676 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:30:56,677 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:30:56,677 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:30:56,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:30:56,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:30:56,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:30:56,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:30:56,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:30:56,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:30:56,680 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:30:56,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:30:56,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:30:56,682 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:30:56,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:30:56,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:30:56,682 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:30:56,683 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_31c10aba-90b9-44fc-9920-a9f50b75aa58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2dab74649212a3ffb00bb2114fde15cc6c5343aaff8c111997aa1541045c9bd [2023-11-06 22:30:56,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:30:56,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:30:56,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:30:56,994 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:30:56,994 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:30:56,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i [2023-11-06 22:31:00,125 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:31:00,370 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:31:00,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i [2023-11-06 22:31:00,380 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/data/8dc4ee60d/d757d99c664e4ace8ed97ccba16a3680/FLAGe285779f4 [2023-11-06 22:31:00,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/data/8dc4ee60d/d757d99c664e4ace8ed97ccba16a3680 [2023-11-06 22:31:00,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:31:00,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:31:00,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:00,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:31:00,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:31:00,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc2469d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00, skipping insertion in model container [2023-11-06 22:31:00,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,451 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:31:00,622 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_31c10aba-90b9-44fc-9920-a9f50b75aa58/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i[916,929] [2023-11-06 22:31:00,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:00,721 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:31:00,735 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_31c10aba-90b9-44fc-9920-a9f50b75aa58/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i[916,929] [2023-11-06 22:31:00,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:00,810 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:31:00,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00 WrapperNode [2023-11-06 22:31:00,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:00,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:31:00,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:31:00,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:31:00,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,895 INFO L138 Inliner]: procedures = 26, calls = 178, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 457 [2023-11-06 22:31:00,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:31:00,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:31:00,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:31:00,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:31:00,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:31:00,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:31:00,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:31:00,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:31:00,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (1/1) ... [2023-11-06 22:31:00,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:31:01,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:01,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:31:01,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:31:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:31:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:31:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:31:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:31:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:31:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:31:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:31:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:31:01,235 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:31:01,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:31:01,912 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:31:01,924 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:31:01,925 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:31:01,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:01 BoogieIcfgContainer [2023-11-06 22:31:01,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:31:01,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:31:01,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:31:01,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:31:01,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:31:00" (1/3) ... [2023-11-06 22:31:01,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a40579e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:31:01, skipping insertion in model container [2023-11-06 22:31:01,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:00" (2/3) ... [2023-11-06 22:31:01,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a40579e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:31:01, skipping insertion in model container [2023-11-06 22:31:01,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:01" (3/3) ... [2023-11-06 22:31:01,938 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-85.i [2023-11-06 22:31:01,958 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:31:01,959 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:31:02,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:31:02,024 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;@44e2a3f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:31:02,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:31:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 105 states have (on average 1.380952380952381) internal successors, (145), 106 states have internal predecessors, (145), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-06 22:31:02,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:31:02,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:02,050 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:02,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:02,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:02,057 INFO L85 PathProgramCache]: Analyzing trace with hash 809731980, now seen corresponding path program 1 times [2023-11-06 22:31:02,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872327177] [2023-11-06 22:31:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:02,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:02,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872327177] [2023-11-06 22:31:02,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:31:02,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668201634] [2023-11-06 22:31:02,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:02,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:02,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:02,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:02,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:31:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:02,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:31:02,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-11-06 22:31:02,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:02,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668201634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:02,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:02,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:02,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135794328] [2023-11-06 22:31:02,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:02,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:31:02,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:02,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:31:02,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:31:02,893 INFO L87 Difference]: Start difference. First operand has 131 states, 105 states have (on average 1.380952380952381) internal successors, (145), 106 states have internal predecessors, (145), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:31:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:02,931 INFO L93 Difference]: Finished difference Result 255 states and 399 transitions. [2023-11-06 22:31:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:31:02,934 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 179 [2023-11-06 22:31:02,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:02,942 INFO L225 Difference]: With dead ends: 255 [2023-11-06 22:31:02,942 INFO L226 Difference]: Without dead ends: 127 [2023-11-06 22:31:02,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 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 22:31:02,950 INFO L413 NwaCegarLoop]: 184 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, 184 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 22:31:02,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:02,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-06 22:31:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-06 22:31:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.3529411764705883) internal successors, (138), 102 states have internal predecessors, (138), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-06 22:31:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 184 transitions. [2023-11-06 22:31:03,014 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 184 transitions. Word has length 179 [2023-11-06 22:31:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:03,014 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 184 transitions. [2023-11-06 22:31:03,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:31:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 184 transitions. [2023-11-06 22:31:03,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:31:03,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:03,021 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:03,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:03,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:31:03,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:03,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:03,225 INFO L85 PathProgramCache]: Analyzing trace with hash 949240606, now seen corresponding path program 1 times [2023-11-06 22:31:03,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:03,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100929039] [2023-11-06 22:31:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:03,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:03,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:03,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30186412] [2023-11-06 22:31:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:03,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:03,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:03,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:03,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:31:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:03,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:31:03,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:04,933 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:31:04,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:04,960 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-11-06 22:31:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-06 22:31:05,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:31:05,215 WARN L839 $PredicateComparison]: unable to prove that (forall ((|~#signed_long_int_Array_0~0.offset| Int) (v_ArrVal_137 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_137)) (.cse2 (+ |c_~#unsigned_char_Array_0~0.offset| 1))) (let ((.cse0 (mod (select (select .cse1 |c_~#unsigned_char_Array_0~0.base|) .cse2) 256))) (= .cse0 (mod (select (select (store .cse1 |c_~#signed_long_int_Array_0~0.base| (store (select .cse1 |c_~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset| (+ .cse0 (- 4)))) |c_~#unsigned_char_Array_0~0.base|) .cse2) 256))))) is different from false [2023-11-06 22:31:05,274 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:31:05,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 566 treesize of output 524 [2023-11-06 22:31:05,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 156 [2023-11-06 22:31:05,302 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 144 [2023-11-06 22:31:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:05,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:05,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100929039] [2023-11-06 22:31:05,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:05,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30186412] [2023-11-06 22:31:05,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30186412] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:05,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:05,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2023-11-06 22:31:05,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089846287] [2023-11-06 22:31:05,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:05,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:31:05,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:31:05,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=163, Unknown=1, NotChecked=26, Total=240 [2023-11-06 22:31:05,663 INFO L87 Difference]: Start difference. First operand 127 states and 184 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:06,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:06,534 INFO L93 Difference]: Finished difference Result 333 states and 484 transitions. [2023-11-06 22:31:06,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:31:06,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-11-06 22:31:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:06,539 INFO L225 Difference]: With dead ends: 333 [2023-11-06 22:31:06,540 INFO L226 Difference]: Without dead ends: 209 [2023-11-06 22:31:06,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 342 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=325, Unknown=1, NotChecked=38, Total=462 [2023-11-06 22:31:06,543 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 367 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:06,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 669 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 333 Invalid, 0 Unknown, 301 Unchecked, 0.5s Time] [2023-11-06 22:31:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-06 22:31:06,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 133. [2023-11-06 22:31:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 108 states have (on average 1.3518518518518519) internal successors, (146), 108 states have internal predecessors, (146), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-06 22:31:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 192 transitions. [2023-11-06 22:31:06,567 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 192 transitions. Word has length 179 [2023-11-06 22:31:06,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:06,569 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 192 transitions. [2023-11-06 22:31:06,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:06,570 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 192 transitions. [2023-11-06 22:31:06,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:31:06,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:06,574 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:06,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:06,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:31:06,783 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:06,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:06,783 INFO L85 PathProgramCache]: Analyzing trace with hash -71827748, now seen corresponding path program 1 times [2023-11-06 22:31:06,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:06,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584690869] [2023-11-06 22:31:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:06,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:06,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:06,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191325395] [2023-11-06 22:31:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:06,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:06,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:06,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:06,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:31:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:07,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:31:07,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:07,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:07,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-06 22:31:07,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-06 22:31:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:07,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:07,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:07,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584690869] [2023-11-06 22:31:07,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:07,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191325395] [2023-11-06 22:31:07,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191325395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:07,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:07,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:31:07,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899738047] [2023-11-06 22:31:07,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:07,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:31:07,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:07,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:31:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:31:07,788 INFO L87 Difference]: Start difference. First operand 133 states and 192 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:08,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:08,567 INFO L93 Difference]: Finished difference Result 405 states and 587 transitions. [2023-11-06 22:31:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:31:08,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-11-06 22:31:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:08,572 INFO L225 Difference]: With dead ends: 405 [2023-11-06 22:31:08,573 INFO L226 Difference]: Without dead ends: 275 [2023-11-06 22:31:08,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:31:08,575 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 363 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:08,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 542 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:31:08,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-06 22:31:08,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 205. [2023-11-06 22:31:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 165 states have (on average 1.3393939393939394) internal successors, (221), 166 states have internal predecessors, (221), 37 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-06 22:31:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 295 transitions. [2023-11-06 22:31:08,640 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 295 transitions. Word has length 179 [2023-11-06 22:31:08,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:08,641 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 295 transitions. [2023-11-06 22:31:08,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:08,641 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 295 transitions. [2023-11-06 22:31:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:31:08,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:08,646 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:08,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:08,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:08,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:08,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:08,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1271131125, now seen corresponding path program 1 times [2023-11-06 22:31:08,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:08,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587748146] [2023-11-06 22:31:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:08,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:08,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:08,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960171410] [2023-11-06 22:31:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:08,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:08,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:08,912 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:08,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:31:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:09,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:31:09,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:09,727 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-11-06 22:31:09,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:09,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2023-11-06 22:31:09,835 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:09,836 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 12 [2023-11-06 22:31:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:09,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:09,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587748146] [2023-11-06 22:31:09,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960171410] [2023-11-06 22:31:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960171410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:09,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:09,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:31:09,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071275515] [2023-11-06 22:31:09,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:09,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:31:09,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:09,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:31:09,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:31:09,856 INFO L87 Difference]: Start difference. First operand 205 states and 295 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:10,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:10,763 INFO L93 Difference]: Finished difference Result 671 states and 964 transitions. [2023-11-06 22:31:10,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:31:10,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-11-06 22:31:10,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:10,769 INFO L225 Difference]: With dead ends: 671 [2023-11-06 22:31:10,770 INFO L226 Difference]: Without dead ends: 469 [2023-11-06 22:31:10,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:31:10,772 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 407 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:10,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 692 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:31:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-06 22:31:10,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 314. [2023-11-06 22:31:10,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 268 states have (on average 1.3619402985074627) internal successors, (365), 271 states have internal predecessors, (365), 41 states have call successors, (41), 4 states have call predecessors, (41), 4 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-06 22:31:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 447 transitions. [2023-11-06 22:31:10,809 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 447 transitions. Word has length 179 [2023-11-06 22:31:10,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:10,810 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 447 transitions. [2023-11-06 22:31:10,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:10,810 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 447 transitions. [2023-11-06 22:31:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:31:10,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:10,814 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:10,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 22:31:11,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:11,022 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:11,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:11,022 INFO L85 PathProgramCache]: Analyzing trace with hash -739703136, now seen corresponding path program 1 times [2023-11-06 22:31:11,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:11,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478438914] [2023-11-06 22:31:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:11,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:11,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:11,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886458946] [2023-11-06 22:31:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:11,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:11,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:11,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:11,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:31:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:11,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:31:11,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:11,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:11,883 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:31:11,902 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-06 22:31:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:11,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:11,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:11,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478438914] [2023-11-06 22:31:11,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:11,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886458946] [2023-11-06 22:31:11,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886458946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:11,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:11,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:31:11,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411805980] [2023-11-06 22:31:11,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:11,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:31:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:11,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:31:11,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:31:11,920 INFO L87 Difference]: Start difference. First operand 314 states and 447 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:12,572 INFO L93 Difference]: Finished difference Result 856 states and 1226 transitions. [2023-11-06 22:31:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:31:12,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-11-06 22:31:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:12,578 INFO L225 Difference]: With dead ends: 856 [2023-11-06 22:31:12,579 INFO L226 Difference]: Without dead ends: 545 [2023-11-06 22:31:12,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:31:12,581 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 367 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:12,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 464 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:31:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-11-06 22:31:12,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 322. [2023-11-06 22:31:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 276 states have (on average 1.358695652173913) internal successors, (375), 279 states have internal predecessors, (375), 41 states have call successors, (41), 4 states have call predecessors, (41), 4 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-06 22:31:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 457 transitions. [2023-11-06 22:31:12,615 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 457 transitions. Word has length 179 [2023-11-06 22:31:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:12,616 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 457 transitions. [2023-11-06 22:31:12,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 457 transitions. [2023-11-06 22:31:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:31:12,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:12,620 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:12,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:12,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:12,854 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:12,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:12,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1760771490, now seen corresponding path program 1 times [2023-11-06 22:31:12,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:12,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385992938] [2023-11-06 22:31:12,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:12,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:12,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:12,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865090217] [2023-11-06 22:31:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:12,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:12,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:12,899 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:12,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:31:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:13,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:31:13,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:14,039 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:31:14,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:14,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-11-06 22:31:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-06 22:31:14,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:31:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:14,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385992938] [2023-11-06 22:31:14,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:14,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865090217] [2023-11-06 22:31:14,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865090217] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:14,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:14,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-06 22:31:14,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792280141] [2023-11-06 22:31:14,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:14,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:31:14,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:14,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:31:14,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:31:14,294 INFO L87 Difference]: Start difference. First operand 322 states and 457 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:14,720 INFO L93 Difference]: Finished difference Result 755 states and 1077 transitions. [2023-11-06 22:31:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:31:14,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-11-06 22:31:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:14,725 INFO L225 Difference]: With dead ends: 755 [2023-11-06 22:31:14,725 INFO L226 Difference]: Without dead ends: 436 [2023-11-06 22:31:14,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:31:14,727 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 179 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:14,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 997 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:31:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-06 22:31:14,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 318. [2023-11-06 22:31:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 272 states have (on average 1.3602941176470589) internal successors, (370), 275 states have internal predecessors, (370), 41 states have call successors, (41), 4 states have call predecessors, (41), 4 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-06 22:31:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 452 transitions. [2023-11-06 22:31:14,756 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 452 transitions. Word has length 179 [2023-11-06 22:31:14,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:14,757 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 452 transitions. [2023-11-06 22:31:14,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:14,757 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 452 transitions. [2023-11-06 22:31:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-06 22:31:14,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:14,760 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:14,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:14,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:14,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:14,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1630099825, now seen corresponding path program 1 times [2023-11-06 22:31:14,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:14,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814740004] [2023-11-06 22:31:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:15,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:15,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524266044] [2023-11-06 22:31:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:15,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:15,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:15,018 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:15,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:31:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:15,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:31:15,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:15,756 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:31:15,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:15,795 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:31:15,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-06 22:31:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:15,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:15,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814740004] [2023-11-06 22:31:15,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:15,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524266044] [2023-11-06 22:31:15,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524266044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:15,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:15,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:31:15,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803715721] [2023-11-06 22:31:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:15,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:31:15,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:15,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:31:15,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:31:15,837 INFO L87 Difference]: Start difference. First operand 318 states and 452 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:16,495 INFO L93 Difference]: Finished difference Result 733 states and 1045 transitions. [2023-11-06 22:31:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:31:16,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2023-11-06 22:31:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:16,499 INFO L225 Difference]: With dead ends: 733 [2023-11-06 22:31:16,499 INFO L226 Difference]: Without dead ends: 418 [2023-11-06 22:31:16,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:31:16,501 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 375 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:16,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 513 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:31:16,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-06 22:31:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 314. [2023-11-06 22:31:16,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 268 states have (on average 1.3507462686567164) internal successors, (362), 271 states have internal predecessors, (362), 41 states have call successors, (41), 4 states have call predecessors, (41), 4 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-06 22:31:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 444 transitions. [2023-11-06 22:31:16,532 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 444 transitions. Word has length 180 [2023-11-06 22:31:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:16,533 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 444 transitions. [2023-11-06 22:31:16,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 444 transitions. [2023-11-06 22:31:16,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-06 22:31:16,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:16,537 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:16,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:16,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:16,745 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:16,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1049088925, now seen corresponding path program 1 times [2023-11-06 22:31:16,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:16,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184568064] [2023-11-06 22:31:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:16,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:16,783 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:16,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581602453] [2023-11-06 22:31:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:16,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:16,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:16,785 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:16,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:31:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:17,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:31:17,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:17,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-11-06 22:31:17,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:17,666 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2023-11-06 22:31:17,692 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:17,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 13 [2023-11-06 22:31:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:17,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:17,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:17,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184568064] [2023-11-06 22:31:17,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:17,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581602453] [2023-11-06 22:31:17,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581602453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:17,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:17,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:31:17,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017494283] [2023-11-06 22:31:17,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:17,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:31:17,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:17,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:31:17,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:31:17,710 INFO L87 Difference]: Start difference. First operand 314 states and 444 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:18,423 INFO L93 Difference]: Finished difference Result 663 states and 937 transitions. [2023-11-06 22:31:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:31:18,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2023-11-06 22:31:18,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:18,427 INFO L225 Difference]: With dead ends: 663 [2023-11-06 22:31:18,427 INFO L226 Difference]: Without dead ends: 352 [2023-11-06 22:31:18,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:31:18,429 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 533 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:18,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 560 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:31:18,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-06 22:31:18,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 312. [2023-11-06 22:31:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 266 states have (on average 1.3458646616541354) internal successors, (358), 269 states have internal predecessors, (358), 41 states have call successors, (41), 4 states have call predecessors, (41), 4 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-06 22:31:18,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 440 transitions. [2023-11-06 22:31:18,457 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 440 transitions. Word has length 180 [2023-11-06 22:31:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:18,458 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 440 transitions. [2023-11-06 22:31:18,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:18,458 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 440 transitions. [2023-11-06 22:31:18,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-06 22:31:18,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:18,461 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:18,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:18,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:18,668 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:18,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:18,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1370979444, now seen corresponding path program 1 times [2023-11-06 22:31:18,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:18,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503605645] [2023-11-06 22:31:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:18,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:18,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:18,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423612388] [2023-11-06 22:31:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:18,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:18,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:18,713 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:18,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:31:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:18,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 22:31:18,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:20,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:31:20,319 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:31:20,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:20,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:20,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2023-11-06 22:31:20,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:20,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:20,488 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2023-11-06 22:31:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-06 22:31:20,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:31:20,897 WARN L839 $PredicateComparison]: unable to prove that (forall ((|~#signed_long_int_Array_0~0.offset| Int) (v_ArrVal_628 (Array Int Int)) (|~#unsigned_char_Array_0~0.offset| Int)) (let ((.cse2 (+ |~#unsigned_char_Array_0~0.offset| 1)) (.cse4 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_628)) (.cse3 (+ |c_~#signed_char_Array_0~0.offset| 1))) (let ((.cse0 (+ (mod (select (select .cse4 |c_~#unsigned_char_Array_0~0.base|) .cse2) 256) (select (select .cse4 |c_~#signed_char_Array_0~0.base|) .cse3)))) (= .cse0 (let ((.cse1 (store .cse4 |c_~#signed_long_int_Array_0~0.base| (store (select .cse4 |c_~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset| .cse0)))) (+ (mod (select (select .cse1 |c_~#unsigned_char_Array_0~0.base|) .cse2) 256) (select (select .cse1 |c_~#signed_char_Array_0~0.base|) .cse3))))))) is different from false [2023-11-06 22:31:20,917 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:20,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 213 treesize of output 124 [2023-11-06 22:31:21,329 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-11-06 22:31:21,331 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 13542 treesize of output 12246 [2023-11-06 22:31:21,434 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:21,435 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1422 treesize of output 1206 [2023-11-06 22:31:21,960 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 150 [2023-11-06 22:31:26,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-06 22:31:26,881 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 101 [2023-11-06 22:31:26,902 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:26,902 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 173 [2023-11-06 22:31:26,940 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:31:26,979 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-06 22:31:27,058 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:27,058 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 1 [2023-11-06 22:31:27,074 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:27,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 1 [2023-11-06 22:31:27,083 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2023-11-06 22:31:27,121 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:27,121 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 289 treesize of output 233 [2023-11-06 22:31:27,234 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:27,235 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 1 [2023-11-06 22:31:27,255 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:31:27,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 94 [2023-11-06 22:31:27,321 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:27,322 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 1 [2023-11-06 22:31:27,340 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:31:27,340 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 173 [2023-11-06 22:31:27,439 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:27,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 1 [2023-11-06 22:31:27,451 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:27,451 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 1 [2023-11-06 22:31:27,467 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:27,467 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 322 treesize of output 1 [2023-11-06 22:31:27,485 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:27,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 289 treesize of output 1 [2023-11-06 22:31:27,503 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:27,504 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 1 [2023-11-06 22:31:27,580 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:27,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 87 [2023-11-06 22:31:27,616 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:27,616 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 83 [2023-11-06 22:31:27,752 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:31:27,759 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:31:27,766 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:31:27,777 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:31:27,780 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:31:27,783 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:31:27,786 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-11-06 22:31:27,843 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:27,843 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 1 [2023-11-06 22:31:27,851 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-11-06 22:31:27,897 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-06 22:31:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:28,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:28,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503605645] [2023-11-06 22:31:28,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:28,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423612388] [2023-11-06 22:31:28,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423612388] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:28,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:28,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 20 [2023-11-06 22:31:28,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038544968] [2023-11-06 22:31:28,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:28,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:31:28,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:28,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:31:28,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=275, Unknown=1, NotChecked=34, Total=380 [2023-11-06 22:31:28,313 INFO L87 Difference]: Start difference. First operand 312 states and 440 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:29,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:29,712 INFO L93 Difference]: Finished difference Result 817 states and 1163 transitions. [2023-11-06 22:31:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:31:29,713 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2023-11-06 22:31:29,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:29,717 INFO L225 Difference]: With dead ends: 817 [2023-11-06 22:31:29,717 INFO L226 Difference]: Without dead ends: 508 [2023-11-06 22:31:29,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=601, Unknown=1, NotChecked=52, Total=812 [2023-11-06 22:31:29,720 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 616 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 352 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:29,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 839 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 698 Invalid, 0 Unknown, 352 Unchecked, 1.0s Time] [2023-11-06 22:31:29,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-06 22:31:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 326. [2023-11-06 22:31:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 280 states have (on average 1.3392857142857142) internal successors, (375), 283 states have internal predecessors, (375), 41 states have call successors, (41), 4 states have call predecessors, (41), 4 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-06 22:31:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 457 transitions. [2023-11-06 22:31:29,758 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 457 transitions. Word has length 180 [2023-11-06 22:31:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:29,759 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 457 transitions. [2023-11-06 22:31:29,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:29,759 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 457 transitions. [2023-11-06 22:31:29,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-06 22:31:29,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:29,763 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:29,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:29,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:31:29,974 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:29,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash 349911090, now seen corresponding path program 1 times [2023-11-06 22:31:29,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:29,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955343788] [2023-11-06 22:31:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:29,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:30,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:30,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726940620] [2023-11-06 22:31:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:30,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:30,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:30,024 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:30,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:31:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:30,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:31:30,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:31,656 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:31:31,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:31:31,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:31,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:31,754 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-11-06 22:31:31,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:31,788 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2023-11-06 22:31:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:31,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:31,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955343788] [2023-11-06 22:31:31,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726940620] [2023-11-06 22:31:31,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726940620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:31,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:31,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:31:31,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801177963] [2023-11-06 22:31:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:31,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:31:31,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:31:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:31:31,804 INFO L87 Difference]: Start difference. First operand 326 states and 457 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:32,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:32,890 INFO L93 Difference]: Finished difference Result 882 states and 1249 transitions. [2023-11-06 22:31:32,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:31:32,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2023-11-06 22:31:32,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:32,895 INFO L225 Difference]: With dead ends: 882 [2023-11-06 22:31:32,895 INFO L226 Difference]: Without dead ends: 559 [2023-11-06 22:31:32,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:31:32,897 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 379 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:32,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 588 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:31:32,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-06 22:31:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 454. [2023-11-06 22:31:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 384 states have (on average 1.3359375) internal successors, (513), 389 states have internal predecessors, (513), 63 states have call successors, (63), 6 states have call predecessors, (63), 6 states have return successors, (63), 58 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-06 22:31:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 639 transitions. [2023-11-06 22:31:32,950 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 639 transitions. Word has length 180 [2023-11-06 22:31:32,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:32,950 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 639 transitions. [2023-11-06 22:31:32,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 639 transitions. [2023-11-06 22:31:32,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-06 22:31:32,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:32,954 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:32,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-06 22:31:33,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:31:33,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:33,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:33,161 INFO L85 PathProgramCache]: Analyzing trace with hash 553330994, now seen corresponding path program 1 times [2023-11-06 22:31:33,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:33,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667279183] [2023-11-06 22:31:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:33,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:33,196 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:33,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985935883] [2023-11-06 22:31:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:33,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:33,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:33,198 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:33,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:31:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:33,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:31:33,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:34,785 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:31:34,801 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:31:34,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:34,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:34,887 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-11-06 22:31:34,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:34,927 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2023-11-06 22:31:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:34,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:34,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:34,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667279183] [2023-11-06 22:31:34,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:34,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985935883] [2023-11-06 22:31:34,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985935883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:34,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:34,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:31:34,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236530014] [2023-11-06 22:31:34,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:34,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:31:34,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:34,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:31:34,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:31:34,945 INFO L87 Difference]: Start difference. First operand 454 states and 639 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:35,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:35,974 INFO L93 Difference]: Finished difference Result 991 states and 1395 transitions. [2023-11-06 22:31:35,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:31:35,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2023-11-06 22:31:35,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:35,979 INFO L225 Difference]: With dead ends: 991 [2023-11-06 22:31:35,979 INFO L226 Difference]: Without dead ends: 540 [2023-11-06 22:31:35,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:31:35,981 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 458 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:35,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 429 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:31:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-11-06 22:31:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 375. [2023-11-06 22:31:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 307 states have (on average 1.296416938110749) internal successors, (398), 311 states have internal predecessors, (398), 61 states have call successors, (61), 6 states have call predecessors, (61), 6 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-06 22:31:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 520 transitions. [2023-11-06 22:31:36,028 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 520 transitions. Word has length 180 [2023-11-06 22:31:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:36,028 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 520 transitions. [2023-11-06 22:31:36,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 520 transitions. [2023-11-06 22:31:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-06 22:31:36,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:36,031 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:36,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-06 22:31:36,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:31:36,237 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:36,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash -467737360, now seen corresponding path program 1 times [2023-11-06 22:31:36,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:36,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143412635] [2023-11-06 22:31:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:36,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:36,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:36,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722087343] [2023-11-06 22:31:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:36,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:36,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:36,285 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:36,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:31:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:36,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:31:36,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:36,566 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-06 22:31:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-06 22:31:36,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:31:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:36,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:36,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143412635] [2023-11-06 22:31:36,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:36,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722087343] [2023-11-06 22:31:36,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722087343] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:36,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:36,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 12 [2023-11-06 22:31:36,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465718812] [2023-11-06 22:31:36,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:36,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:31:36,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:31:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:31:36,729 INFO L87 Difference]: Start difference. First operand 375 states and 520 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:37,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:37,149 INFO L93 Difference]: Finished difference Result 828 states and 1157 transitions. [2023-11-06 22:31:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:31:37,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2023-11-06 22:31:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:37,153 INFO L225 Difference]: With dead ends: 828 [2023-11-06 22:31:37,154 INFO L226 Difference]: Without dead ends: 489 [2023-11-06 22:31:37,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:31:37,156 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 231 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:37,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1448 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:31:37,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-11-06 22:31:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 371. [2023-11-06 22:31:37,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 303 states have (on average 1.297029702970297) internal successors, (393), 307 states have internal predecessors, (393), 61 states have call successors, (61), 6 states have call predecessors, (61), 6 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-06 22:31:37,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 515 transitions. [2023-11-06 22:31:37,201 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 515 transitions. Word has length 180 [2023-11-06 22:31:37,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:37,201 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 515 transitions. [2023-11-06 22:31:37,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:37,202 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 515 transitions. [2023-11-06 22:31:37,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-06 22:31:37,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:37,204 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:37,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-06 22:31:37,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:37,413 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:37,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:37,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1305242691, now seen corresponding path program 1 times [2023-11-06 22:31:37,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:37,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858643689] [2023-11-06 22:31:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:37,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:37,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:37,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787277776] [2023-11-06 22:31:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:37,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:37,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:37,449 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:37,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:31:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:37,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:31:37,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:38,237 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:31:38,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:38,289 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-06 22:31:38,306 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-06 22:31:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:38,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:38,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858643689] [2023-11-06 22:31:38,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787277776] [2023-11-06 22:31:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787277776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:38,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:38,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:31:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506776710] [2023-11-06 22:31:38,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:38,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:31:38,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:31:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:31:38,322 INFO L87 Difference]: Start difference. First operand 371 states and 515 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:38,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:38,960 INFO L93 Difference]: Finished difference Result 708 states and 979 transitions. [2023-11-06 22:31:38,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:31:38,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-06 22:31:38,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:38,964 INFO L225 Difference]: With dead ends: 708 [2023-11-06 22:31:38,964 INFO L226 Difference]: Without dead ends: 373 [2023-11-06 22:31:38,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:31:38,966 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 316 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:38,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 445 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:31:38,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-06 22:31:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 338. [2023-11-06 22:31:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 284 states have (on average 1.3028169014084507) internal successors, (370), 287 states have internal predecessors, (370), 47 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-06 22:31:39,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 464 transitions. [2023-11-06 22:31:39,020 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 464 transitions. Word has length 181 [2023-11-06 22:31:39,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:39,021 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 464 transitions. [2023-11-06 22:31:39,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:39,022 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 464 transitions. [2023-11-06 22:31:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-06 22:31:39,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:39,024 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:39,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:39,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:31:39,238 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:39,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1472563511, now seen corresponding path program 1 times [2023-11-06 22:31:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:39,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016232399] [2023-11-06 22:31:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:39,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:39,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:39,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900335961] [2023-11-06 22:31:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:39,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:39,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:39,280 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:39,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:31:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:39,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:31:39,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:40,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:31:40,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:31:41,038 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-06 22:31:41,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:41,114 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:41,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:41,172 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:41,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:41,183 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:41,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:41,223 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:41,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:41,261 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-11-06 22:31:41,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:31:41,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:41,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016232399] [2023-11-06 22:31:41,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:41,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900335961] [2023-11-06 22:31:41,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900335961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:41,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:41,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-06 22:31:41,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352145499] [2023-11-06 22:31:41,708 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:31:41,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:31:41,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:41,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:31:41,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=220, Unknown=18, NotChecked=0, Total=306 [2023-11-06 22:31:41,710 INFO L87 Difference]: Start difference. First operand 338 states and 464 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:31:42,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:42,751 INFO L93 Difference]: Finished difference Result 993 states and 1363 transitions. [2023-11-06 22:31:42,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:31:42,752 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 182 [2023-11-06 22:31:42,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:42,761 INFO L225 Difference]: With dead ends: 993 [2023-11-06 22:31:42,761 INFO L226 Difference]: Without dead ends: 658 [2023-11-06 22:31:42,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=318, Unknown=18, NotChecked=0, Total=462 [2023-11-06 22:31:42,763 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 473 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:42,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 381 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:31:42,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-11-06 22:31:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 654. [2023-11-06 22:31:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 554 states have (on average 1.3014440433212997) internal successors, (721), 561 states have internal predecessors, (721), 87 states have call successors, (87), 12 states have call predecessors, (87), 12 states have return successors, (87), 80 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-06 22:31:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 895 transitions. [2023-11-06 22:31:42,854 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 895 transitions. Word has length 182 [2023-11-06 22:31:42,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:42,855 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 895 transitions. [2023-11-06 22:31:42,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:31:42,856 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 895 transitions. [2023-11-06 22:31:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-06 22:31:42,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:42,860 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:42,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:43,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:31:43,073 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:43,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:43,073 INFO L85 PathProgramCache]: Analyzing trace with hash -192699833, now seen corresponding path program 1 times [2023-11-06 22:31:43,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:43,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536699588] [2023-11-06 22:31:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:43,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:43,119 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:43,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512003533] [2023-11-06 22:31:43,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:43,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:43,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:43,121 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:43,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:31:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:43,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:31:43,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:44,428 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:31:44,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:44,497 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:44,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:44,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:44,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:44,561 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:44,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:44,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:44,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:44,633 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:44,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:44,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536699588] [2023-11-06 22:31:44,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512003533] [2023-11-06 22:31:44,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512003533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:44,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:44,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:31:44,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920442981] [2023-11-06 22:31:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:44,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:31:44,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:31:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:31:44,707 INFO L87 Difference]: Start difference. First operand 654 states and 895 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:45,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:45,834 INFO L93 Difference]: Finished difference Result 2166 states and 2985 transitions. [2023-11-06 22:31:45,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:31:45,835 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 182 [2023-11-06 22:31:45,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:45,844 INFO L225 Difference]: With dead ends: 2166 [2023-11-06 22:31:45,844 INFO L226 Difference]: Without dead ends: 1515 [2023-11-06 22:31:45,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:31:45,847 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 628 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:45,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 778 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:31:45,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2023-11-06 22:31:45,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 796. [2023-11-06 22:31:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 696 states have (on average 1.2916666666666667) internal successors, (899), 703 states have internal predecessors, (899), 87 states have call successors, (87), 12 states have call predecessors, (87), 12 states have return successors, (87), 80 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-06 22:31:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1073 transitions. [2023-11-06 22:31:45,960 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1073 transitions. Word has length 182 [2023-11-06 22:31:45,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:45,961 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1073 transitions. [2023-11-06 22:31:45,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1073 transitions. [2023-11-06 22:31:45,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-06 22:31:45,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:45,964 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:45,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:46,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:31:46,170 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:46,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:46,170 INFO L85 PathProgramCache]: Analyzing trace with hash -526451988, now seen corresponding path program 1 times [2023-11-06 22:31:46,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:46,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661234496] [2023-11-06 22:31:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:46,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:46,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:46,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526927288] [2023-11-06 22:31:46,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:46,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:46,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:46,206 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:46,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:31:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:46,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:31:46,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:46,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:46,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:46,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661234496] [2023-11-06 22:31:46,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:46,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526927288] [2023-11-06 22:31:46,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526927288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:46,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:46,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:46,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567319750] [2023-11-06 22:31:46,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:46,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:46,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:46,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:46,499 INFO L87 Difference]: Start difference. First operand 796 states and 1073 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:46,587 INFO L93 Difference]: Finished difference Result 1705 states and 2313 transitions. [2023-11-06 22:31:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:46,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 184 [2023-11-06 22:31:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:46,593 INFO L225 Difference]: With dead ends: 1705 [2023-11-06 22:31:46,594 INFO L226 Difference]: Without dead ends: 912 [2023-11-06 22:31:46,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 182 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 22:31:46,596 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 41 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:46,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 358 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:46,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2023-11-06 22:31:46,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 794. [2023-11-06 22:31:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 694 states have (on average 1.2780979827089338) internal successors, (887), 701 states have internal predecessors, (887), 87 states have call successors, (87), 12 states have call predecessors, (87), 12 states have return successors, (87), 80 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-06 22:31:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1061 transitions. [2023-11-06 22:31:46,696 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1061 transitions. Word has length 184 [2023-11-06 22:31:46,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:46,696 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1061 transitions. [2023-11-06 22:31:46,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:46,697 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1061 transitions. [2023-11-06 22:31:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-06 22:31:46,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:46,700 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:46,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:46,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:31:46,916 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:46,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1332326494, now seen corresponding path program 1 times [2023-11-06 22:31:46,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:46,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515985696] [2023-11-06 22:31:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:46,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:46,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:46,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732615110] [2023-11-06 22:31:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:46,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:46,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:46,960 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:46,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:31:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:47,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:31:47,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:47,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:47,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:47,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515985696] [2023-11-06 22:31:47,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:47,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732615110] [2023-11-06 22:31:47,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732615110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:47,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:47,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:47,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894693863] [2023-11-06 22:31:47,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:47,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:47,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:47,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:47,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:47,233 INFO L87 Difference]: Start difference. First operand 794 states and 1061 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:47,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:47,312 INFO L93 Difference]: Finished difference Result 1388 states and 1859 transitions. [2023-11-06 22:31:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:47,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 184 [2023-11-06 22:31:47,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:47,316 INFO L225 Difference]: With dead ends: 1388 [2023-11-06 22:31:47,317 INFO L226 Difference]: Without dead ends: 597 [2023-11-06 22:31:47,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 182 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 22:31:47,319 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:47,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 358 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-11-06 22:31:47,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2023-11-06 22:31:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 520 states have (on average 1.2807692307692307) internal successors, (666), 525 states have internal predecessors, (666), 67 states have call successors, (67), 9 states have call predecessors, (67), 9 states have return successors, (67), 62 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-06 22:31:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 800 transitions. [2023-11-06 22:31:47,392 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 800 transitions. Word has length 184 [2023-11-06 22:31:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:47,392 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 800 transitions. [2023-11-06 22:31:47,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:47,393 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 800 transitions. [2023-11-06 22:31:47,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-06 22:31:47,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:47,395 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:47,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:47,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:31:47,602 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:47,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash 808360108, now seen corresponding path program 1 times [2023-11-06 22:31:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:47,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47245945] [2023-11-06 22:31:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:47,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:47,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:47,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761725505] [2023-11-06 22:31:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:47,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:47,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:47,645 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:47,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:31:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:47,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:31:47,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:47,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-06 22:31:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:47,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:47,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:47,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47245945] [2023-11-06 22:31:47,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:47,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761725505] [2023-11-06 22:31:47,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761725505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:47,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:47,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:47,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127740802] [2023-11-06 22:31:47,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:47,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:47,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:47,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:47,962 INFO L87 Difference]: Start difference. First operand 597 states and 800 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:48,165 INFO L93 Difference]: Finished difference Result 1183 states and 1585 transitions. [2023-11-06 22:31:48,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:48,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 184 [2023-11-06 22:31:48,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:48,170 INFO L225 Difference]: With dead ends: 1183 [2023-11-06 22:31:48,170 INFO L226 Difference]: Without dead ends: 589 [2023-11-06 22:31:48,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 181 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 22:31:48,173 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 84 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:48,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 368 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:31:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-11-06 22:31:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 583. [2023-11-06 22:31:48,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 506 states have (on average 1.2687747035573123) internal successors, (642), 511 states have internal predecessors, (642), 67 states have call successors, (67), 9 states have call predecessors, (67), 9 states have return successors, (67), 62 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-06 22:31:48,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 776 transitions. [2023-11-06 22:31:48,251 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 776 transitions. Word has length 184 [2023-11-06 22:31:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:48,252 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 776 transitions. [2023-11-06 22:31:48,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 776 transitions. [2023-11-06 22:31:48,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-06 22:31:48,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:48,254 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:48,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:48,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:31:48,461 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:48,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash 310969826, now seen corresponding path program 1 times [2023-11-06 22:31:48,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:48,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249168712] [2023-11-06 22:31:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:48,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:48,494 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:48,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096971537] [2023-11-06 22:31:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:48,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:48,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:48,496 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:48,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:31:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:48,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:31:48,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:48,805 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-06 22:31:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:48,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:48,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249168712] [2023-11-06 22:31:48,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096971537] [2023-11-06 22:31:48,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096971537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:48,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:48,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:48,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491179258] [2023-11-06 22:31:48,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:48,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:48,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:48,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:48,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:48,817 INFO L87 Difference]: Start difference. First operand 583 states and 776 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:49,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:49,010 INFO L93 Difference]: Finished difference Result 966 states and 1282 transitions. [2023-11-06 22:31:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:49,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 184 [2023-11-06 22:31:49,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:49,013 INFO L225 Difference]: With dead ends: 966 [2023-11-06 22:31:49,014 INFO L226 Difference]: Without dead ends: 386 [2023-11-06 22:31:49,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 181 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 22:31:49,016 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 4 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:49,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 436 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:31:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-06 22:31:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2023-11-06 22:31:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 333 states have (on average 1.2552552552552552) internal successors, (418), 336 states have internal predecessors, (418), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:31:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 508 transitions. [2023-11-06 22:31:49,074 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 508 transitions. Word has length 184 [2023-11-06 22:31:49,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:49,075 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 508 transitions. [2023-11-06 22:31:49,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 508 transitions. [2023-11-06 22:31:49,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-06 22:31:49,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:49,077 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:49,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:49,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:49,284 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:49,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:49,284 INFO L85 PathProgramCache]: Analyzing trace with hash 993635391, now seen corresponding path program 1 times [2023-11-06 22:31:49,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:49,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753205881] [2023-11-06 22:31:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:49,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:49,314 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:49,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275445861] [2023-11-06 22:31:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:49,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:49,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:49,316 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:49,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:31:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:49,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:31:49,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:50,379 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-06 22:31:50,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:50,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2023-11-06 22:31:50,584 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 26 [2023-11-06 22:31:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:50,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:50,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:50,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753205881] [2023-11-06 22:31:50,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:50,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275445861] [2023-11-06 22:31:50,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275445861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:50,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:50,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:31:50,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499684558] [2023-11-06 22:31:50,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:50,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:31:50,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:50,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:31:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:31:50,599 INFO L87 Difference]: Start difference. First operand 386 states and 508 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:51,331 INFO L93 Difference]: Finished difference Result 865 states and 1136 transitions. [2023-11-06 22:31:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:31:51,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 186 [2023-11-06 22:31:51,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:51,334 INFO L225 Difference]: With dead ends: 865 [2023-11-06 22:31:51,334 INFO L226 Difference]: Without dead ends: 482 [2023-11-06 22:31:51,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:31:51,335 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 217 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:51,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 661 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:31:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-06 22:31:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 402. [2023-11-06 22:31:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 349 states have (on average 1.2464183381088825) internal successors, (435), 352 states have internal predecessors, (435), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:31:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 525 transitions. [2023-11-06 22:31:51,397 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 525 transitions. Word has length 186 [2023-11-06 22:31:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:51,398 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 525 transitions. [2023-11-06 22:31:51,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 525 transitions. [2023-11-06 22:31:51,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-06 22:31:51,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:51,400 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:51,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:51,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:51,607 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:51,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash -940134299, now seen corresponding path program 1 times [2023-11-06 22:31:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994249437] [2023-11-06 22:31:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:51,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:51,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:51,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58500915] [2023-11-06 22:31:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:51,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:51,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:51,656 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:51,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:31:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:51,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:31:51,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:53,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:31:53,133 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 28 [2023-11-06 22:31:53,137 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 48 [2023-11-06 22:31:53,169 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-11-06 22:31:53,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:53,220 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 29 [2023-11-06 22:31:53,304 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 30 [2023-11-06 22:31:53,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:53,367 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 29 [2023-11-06 22:31:53,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-11-06 22:31:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:53,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:53,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:53,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994249437] [2023-11-06 22:31:53,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:53,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58500915] [2023-11-06 22:31:53,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58500915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:53,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:53,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:31:53,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043853052] [2023-11-06 22:31:53,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:53,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:31:53,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:53,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:31:53,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:31:53,603 INFO L87 Difference]: Start difference. First operand 402 states and 525 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:54,863 INFO L93 Difference]: Finished difference Result 1250 states and 1644 transitions. [2023-11-06 22:31:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:31:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 187 [2023-11-06 22:31:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:54,868 INFO L225 Difference]: With dead ends: 1250 [2023-11-06 22:31:54,868 INFO L226 Difference]: Without dead ends: 851 [2023-11-06 22:31:54,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:31:54,870 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 603 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:54,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 961 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:31:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-11-06 22:31:54,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 551. [2023-11-06 22:31:54,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 498 states have (on average 1.2389558232931728) internal successors, (617), 501 states have internal predecessors, (617), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:31:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 707 transitions. [2023-11-06 22:31:54,946 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 707 transitions. Word has length 187 [2023-11-06 22:31:54,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:54,947 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 707 transitions. [2023-11-06 22:31:54,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 707 transitions. [2023-11-06 22:31:54,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-06 22:31:54,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:54,950 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:54,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:55,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:55,157 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:55,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash -681968861, now seen corresponding path program 1 times [2023-11-06 22:31:55,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:55,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168447326] [2023-11-06 22:31:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:55,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:55,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:55,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259541703] [2023-11-06 22:31:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:55,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:55,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:55,189 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:55,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 22:31:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:55,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:31:55,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:55,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:55,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:55,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168447326] [2023-11-06 22:31:55,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:55,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259541703] [2023-11-06 22:31:55,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259541703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:55,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:55,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:55,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929439115] [2023-11-06 22:31:55,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:55,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:55,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:55,506 INFO L87 Difference]: Start difference. First operand 551 states and 707 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:55,571 INFO L93 Difference]: Finished difference Result 1277 states and 1667 transitions. [2023-11-06 22:31:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:55,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 187 [2023-11-06 22:31:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:55,581 INFO L225 Difference]: With dead ends: 1277 [2023-11-06 22:31:55,581 INFO L226 Difference]: Without dead ends: 729 [2023-11-06 22:31:55,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 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 22:31:55,586 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 87 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:55,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 522 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:55,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-11-06 22:31:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 563. [2023-11-06 22:31:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 510 states have (on average 1.2333333333333334) internal successors, (629), 513 states have internal predecessors, (629), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:31:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 719 transitions. [2023-11-06 22:31:55,666 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 719 transitions. Word has length 187 [2023-11-06 22:31:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:55,666 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 719 transitions. [2023-11-06 22:31:55,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 719 transitions. [2023-11-06 22:31:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-06 22:31:55,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:55,671 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:55,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:55,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:55,877 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:55,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:55,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1969493597, now seen corresponding path program 1 times [2023-11-06 22:31:55,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:55,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416096081] [2023-11-06 22:31:55,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:55,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:55,912 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:55,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323531828] [2023-11-06 22:31:55,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:55,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:55,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:55,913 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:55,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-06 22:31:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:56,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:31:56,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:56,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:56,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:56,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416096081] [2023-11-06 22:31:56,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:56,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323531828] [2023-11-06 22:31:56,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323531828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:56,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:56,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:56,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863774118] [2023-11-06 22:31:56,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:56,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:56,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:56,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:56,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:56,232 INFO L87 Difference]: Start difference. First operand 563 states and 719 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:56,294 INFO L93 Difference]: Finished difference Result 1129 states and 1443 transitions. [2023-11-06 22:31:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:56,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 187 [2023-11-06 22:31:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:56,297 INFO L225 Difference]: With dead ends: 1129 [2023-11-06 22:31:56,297 INFO L226 Difference]: Without dead ends: 569 [2023-11-06 22:31:56,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 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 22:31:56,298 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 3 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:56,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 505 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:56,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-11-06 22:31:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 567. [2023-11-06 22:31:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 514 states have (on average 1.2315175097276265) internal successors, (633), 517 states have internal predecessors, (633), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:31:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 723 transitions. [2023-11-06 22:31:56,380 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 723 transitions. Word has length 187 [2023-11-06 22:31:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:56,380 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 723 transitions. [2023-11-06 22:31:56,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 723 transitions. [2023-11-06 22:31:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-06 22:31:56,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:56,383 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:56,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:56,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 22:31:56,589 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:56,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash -41526375, now seen corresponding path program 1 times [2023-11-06 22:31:56,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:56,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953527318] [2023-11-06 22:31:56,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:56,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:56,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:56,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414925099] [2023-11-06 22:31:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:56,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:56,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:56,619 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:56,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 22:31:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:56,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:31:56,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:57,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 31 [2023-11-06 22:31:57,744 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 51 [2023-11-06 22:31:57,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-11-06 22:31:57,880 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2023-11-06 22:31:57,884 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 76 [2023-11-06 22:31:57,898 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 46 [2023-11-06 22:31:58,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:58,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 77 [2023-11-06 22:31:58,175 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 80 [2023-11-06 22:31:58,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 58 [2023-11-06 22:31:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:31:58,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:58,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:58,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953527318] [2023-11-06 22:31:58,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:58,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414925099] [2023-11-06 22:31:58,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414925099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:58,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:58,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:31:58,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749271318] [2023-11-06 22:31:58,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:58,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:31:58,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:58,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:31:58,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:31:58,296 INFO L87 Difference]: Start difference. First operand 567 states and 723 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 9 states have internal predecessors, (76), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:59,066 INFO L93 Difference]: Finished difference Result 1175 states and 1509 transitions. [2023-11-06 22:31:59,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:31:59,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 9 states have internal predecessors, (76), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 188 [2023-11-06 22:31:59,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:59,077 INFO L225 Difference]: With dead ends: 1175 [2023-11-06 22:31:59,077 INFO L226 Difference]: Without dead ends: 611 [2023-11-06 22:31:59,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:31:59,085 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 133 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:59,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 433 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:31:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-06 22:31:59,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 591. [2023-11-06 22:31:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 538 states have (on average 1.2397769516728625) internal successors, (667), 541 states have internal predecessors, (667), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-06 22:31:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 757 transitions. [2023-11-06 22:31:59,164 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 757 transitions. Word has length 188 [2023-11-06 22:31:59,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:59,165 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 757 transitions. [2023-11-06 22:31:59,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 9 states have internal predecessors, (76), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:31:59,165 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 757 transitions. [2023-11-06 22:31:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:31:59,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:59,168 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:59,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:59,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:31:59,376 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:59,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:59,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1326640703, now seen corresponding path program 1 times [2023-11-06 22:31:59,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:59,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401782402] [2023-11-06 22:31:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:59,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:59,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:59,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473009504] [2023-11-06 22:31:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:59,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:59,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:59,410 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:59,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 22:31:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:59,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-06 22:31:59,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:00,677 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:32:00,870 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:32:01,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:01,091 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:01,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:01,311 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:01,538 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:01,734 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:02,056 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:02,143 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:32:02,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-11-06 22:32:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 387 proven. 273 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-11-06 22:32:02,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:02,397 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1772 Int) (v_ArrVal_1773 (Array Int Int))) (= 0 (mod (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_1772)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_1773) |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) 256))) is different from false [2023-11-06 22:32:02,802 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1767 (Array Int Int)) (v_ArrVal_1772 Int) (v_ArrVal_1773 (Array Int Int)) (v_ArrVal_1770 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_1767))) (let ((.cse1 (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (let ((.cse2 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (select (select (store (store (store .cse0 |c_~#signed_char_Array_0~0.base| v_ArrVal_1770) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store (store .cse0 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse1 .cse2 1) (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_1770) |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_1772)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_1773) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse2)) 256) 0) (not (= (mod (select .cse1 (+ 8 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) 256) 0)))))) is different from false [2023-11-06 22:32:02,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:02,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401782402] [2023-11-06 22:32:02,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:02,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473009504] [2023-11-06 22:32:02,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473009504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:02,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:32:02,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-06 22:32:02,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670745222] [2023-11-06 22:32:02,859 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:02,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:32:02,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:02,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:32:02,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=325, Unknown=23, NotChecked=78, Total=506 [2023-11-06 22:32:02,861 INFO L87 Difference]: Start difference. First operand 591 states and 757 transitions. Second operand has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-06 22:32:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:04,416 INFO L93 Difference]: Finished difference Result 1310 states and 1679 transitions. [2023-11-06 22:32:04,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:32:04,416 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 189 [2023-11-06 22:32:04,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:04,421 INFO L225 Difference]: With dead ends: 1310 [2023-11-06 22:32:04,421 INFO L226 Difference]: Without dead ends: 722 [2023-11-06 22:32:04,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=821, Unknown=23, NotChecked=126, Total=1190 [2023-11-06 22:32:04,423 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 268 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:04,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 456 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:32:04,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-06 22:32:04,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 700. [2023-11-06 22:32:04,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 625 states have (on average 1.2384) internal successors, (774), 631 states have internal predecessors, (774), 63 states have call successors, (63), 11 states have call predecessors, (63), 11 states have return successors, (63), 57 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-06 22:32:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 900 transitions. [2023-11-06 22:32:04,528 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 900 transitions. Word has length 189 [2023-11-06 22:32:04,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:04,529 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 900 transitions. [2023-11-06 22:32:04,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-06 22:32:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 900 transitions. [2023-11-06 22:32:04,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:32:04,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:04,532 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:04,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:04,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:32:04,739 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:04,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:04,740 INFO L85 PathProgramCache]: Analyzing trace with hash 932273917, now seen corresponding path program 1 times [2023-11-06 22:32:04,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:04,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533109878] [2023-11-06 22:32:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:04,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:04,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:04,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115627555] [2023-11-06 22:32:04,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:04,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:04,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:04,788 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:04,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 22:32:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:05,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:32:05,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:05,644 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:32:05,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:05,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:32:06,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:06,008 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:32:06,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:06,151 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:32:06,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:06,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:32:06,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:06,420 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:32:06,454 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2023-11-06 22:32:06,462 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 62 [2023-11-06 22:32:06,493 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2023-11-06 22:32:06,530 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:32:06,530 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 37 [2023-11-06 22:32:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 183 proven. 505 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-11-06 22:32:06,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:06,602 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1848 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_1848) |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 9 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) 256) 0))) is different from false [2023-11-06 22:32:06,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:06,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533109878] [2023-11-06 22:32:06,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:06,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115627555] [2023-11-06 22:32:06,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115627555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:06,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:32:06,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-06 22:32:06,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821712749] [2023-11-06 22:32:06,627 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:06,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:32:06,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:06,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:32:06,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=142, Unknown=1, NotChecked=24, Total=210 [2023-11-06 22:32:06,629 INFO L87 Difference]: Start difference. First operand 700 states and 900 transitions. Second operand has 13 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-06 22:32:07,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:07,689 INFO L93 Difference]: Finished difference Result 1424 states and 1820 transitions. [2023-11-06 22:32:07,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:32:07,690 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 189 [2023-11-06 22:32:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:07,694 INFO L225 Difference]: With dead ends: 1424 [2023-11-06 22:32:07,694 INFO L226 Difference]: Without dead ends: 744 [2023-11-06 22:32:07,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=344, Unknown=1, NotChecked=40, Total=506 [2023-11-06 22:32:07,696 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 152 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:07,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 509 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:32:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-11-06 22:32:07,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 720. [2023-11-06 22:32:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 643 states have (on average 1.2317262830482114) internal successors, (792), 649 states have internal predecessors, (792), 63 states have call successors, (63), 13 states have call predecessors, (63), 13 states have return successors, (63), 57 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-06 22:32:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 918 transitions. [2023-11-06 22:32:07,795 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 918 transitions. Word has length 189 [2023-11-06 22:32:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:07,796 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 918 transitions. [2023-11-06 22:32:07,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-06 22:32:07,796 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 918 transitions. [2023-11-06 22:32:07,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:32:07,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:07,799 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:07,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-06 22:32:08,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:08,006 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:08,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:08,006 INFO L85 PathProgramCache]: Analyzing trace with hash -97085381, now seen corresponding path program 1 times [2023-11-06 22:32:08,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:08,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579811440] [2023-11-06 22:32:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:08,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:08,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:08,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801265665] [2023-11-06 22:32:08,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:08,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:08,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:08,042 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:08,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-06 22:32:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:08,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:32:08,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:09,217 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:32:09,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:09,377 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:09,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:09,542 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:09,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:09,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:09,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:09,818 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:10,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:10,008 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:10,088 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2023-11-06 22:32:10,092 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 46 [2023-11-06 22:32:10,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 235 proven. 511 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-11-06 22:32:10,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:10,173 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1924 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_1924) |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 4 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) 256) 0))) is different from false [2023-11-06 22:32:10,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:10,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579811440] [2023-11-06 22:32:10,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:10,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801265665] [2023-11-06 22:32:10,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801265665] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:10,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:32:10,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-06 22:32:10,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96113] [2023-11-06 22:32:10,193 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:10,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:32:10,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:10,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:32:10,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=98, Unknown=1, NotChecked=20, Total=156 [2023-11-06 22:32:10,196 INFO L87 Difference]: Start difference. First operand 720 states and 918 transitions. Second operand has 11 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-06 22:32:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:10,889 INFO L93 Difference]: Finished difference Result 1426 states and 1802 transitions. [2023-11-06 22:32:10,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:32:10,890 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 189 [2023-11-06 22:32:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:10,894 INFO L225 Difference]: With dead ends: 1426 [2023-11-06 22:32:10,894 INFO L226 Difference]: Without dead ends: 726 [2023-11-06 22:32:10,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=218, Unknown=1, NotChecked=32, Total=342 [2023-11-06 22:32:10,896 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 122 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:10,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 340 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:32:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-11-06 22:32:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 708. [2023-11-06 22:32:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 629 states have (on average 1.2114467408585055) internal successors, (762), 635 states have internal predecessors, (762), 63 states have call successors, (63), 15 states have call predecessors, (63), 15 states have return successors, (63), 57 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-06 22:32:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 888 transitions. [2023-11-06 22:32:10,985 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 888 transitions. Word has length 189 [2023-11-06 22:32:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:10,985 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 888 transitions. [2023-11-06 22:32:10,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-06 22:32:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 888 transitions. [2023-11-06 22:32:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:32:10,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:10,988 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:10,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-06 22:32:11,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 22:32:11,192 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:11,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash 393164157, now seen corresponding path program 1 times [2023-11-06 22:32:11,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:11,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34335712] [2023-11-06 22:32:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:11,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:11,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:11,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760723759] [2023-11-06 22:32:11,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:11,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:11,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:11,223 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:11,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-06 22:32:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:11,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:32:11,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:32:11,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:11,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:11,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34335712] [2023-11-06 22:32:11,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:11,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760723759] [2023-11-06 22:32:11,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760723759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:11,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:11,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:32:11,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049107747] [2023-11-06 22:32:11,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:11,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:32:11,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:32:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:32:11,551 INFO L87 Difference]: Start difference. First operand 708 states and 888 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:11,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:11,671 INFO L93 Difference]: Finished difference Result 1404 states and 1758 transitions. [2023-11-06 22:32:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:32:11,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 189 [2023-11-06 22:32:11,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:11,676 INFO L225 Difference]: With dead ends: 1404 [2023-11-06 22:32:11,676 INFO L226 Difference]: Without dead ends: 716 [2023-11-06 22:32:11,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:32:11,678 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 6 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:11,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 660 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:32:11,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2023-11-06 22:32:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 714. [2023-11-06 22:32:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 635 states have (on average 1.2094488188976378) internal successors, (768), 641 states have internal predecessors, (768), 63 states have call successors, (63), 15 states have call predecessors, (63), 15 states have return successors, (63), 57 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-06 22:32:11,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 894 transitions. [2023-11-06 22:32:11,784 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 894 transitions. Word has length 189 [2023-11-06 22:32:11,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:11,785 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 894 transitions. [2023-11-06 22:32:11,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:11,785 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 894 transitions. [2023-11-06 22:32:11,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:32:11,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:11,788 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:11,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:11,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-06 22:32:11,994 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:11,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash 816810879, now seen corresponding path program 1 times [2023-11-06 22:32:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:11,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232412640] [2023-11-06 22:32:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:11,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:12,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604193261] [2023-11-06 22:32:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:12,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:12,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:12,061 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:12,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-06 22:32:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:12,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:32:12,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:13,629 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 30 [2023-11-06 22:32:13,633 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 50 [2023-11-06 22:32:13,645 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-11-06 22:32:13,772 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 50 [2023-11-06 22:32:13,776 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 74 [2023-11-06 22:32:13,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 44 [2023-11-06 22:32:13,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:13,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 73 [2023-11-06 22:32:14,095 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 69 [2023-11-06 22:32:14,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:14,251 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 73 [2023-11-06 22:32:14,754 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 65 [2023-11-06 22:32:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:32:14,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:14,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:14,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232412640] [2023-11-06 22:32:14,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:14,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604193261] [2023-11-06 22:32:14,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604193261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:14,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:14,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:32:14,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677380978] [2023-11-06 22:32:14,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:14,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:32:14,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:32:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:32:14,775 INFO L87 Difference]: Start difference. First operand 714 states and 894 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:15,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:15,665 INFO L93 Difference]: Finished difference Result 1577 states and 1965 transitions. [2023-11-06 22:32:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:32:15,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 189 [2023-11-06 22:32:15,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:15,671 INFO L225 Difference]: With dead ends: 1577 [2023-11-06 22:32:15,671 INFO L226 Difference]: Without dead ends: 883 [2023-11-06 22:32:15,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:32:15,673 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 301 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:15,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 451 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:32:15,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-06 22:32:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 596. [2023-11-06 22:32:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 520 states have (on average 1.1942307692307692) internal successors, (621), 524 states have internal predecessors, (621), 59 states have call successors, (59), 16 states have call predecessors, (59), 16 states have return successors, (59), 55 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-06 22:32:15,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 739 transitions. [2023-11-06 22:32:15,797 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 739 transitions. Word has length 189 [2023-11-06 22:32:15,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:15,798 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 739 transitions. [2023-11-06 22:32:15,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:15,798 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 739 transitions. [2023-11-06 22:32:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:32:15,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:15,801 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:15,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:16,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 22:32:16,008 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:16,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1668966143, now seen corresponding path program 1 times [2023-11-06 22:32:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:16,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631779781] [2023-11-06 22:32:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:16,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:16,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:16,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204903568] [2023-11-06 22:32:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:16,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:16,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:16,042 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:16,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-06 22:32:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:16,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 22:32:16,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:17,053 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:32:17,195 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:32:17,351 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:32:17,491 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:32:17,647 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:32:17,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:32:17,965 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:32:18,176 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:32:18,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 30 [2023-11-06 22:32:18,374 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 50 [2023-11-06 22:32:18,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-11-06 22:32:18,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 50 [2023-11-06 22:32:18,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 74 [2023-11-06 22:32:18,543 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 44 [2023-11-06 22:32:18,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:18,663 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 73 [2023-11-06 22:32:18,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 83 [2023-11-06 22:32:19,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:19,074 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 80 [2023-11-06 22:32:19,762 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 68 [2023-11-06 22:32:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-11-06 22:32:19,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:19,865 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2149 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2149) |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 3 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) 256) 0)) is different from false [2023-11-06 22:32:19,884 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2149 (Array Int Int))) (= (mod (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse0 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse0 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|) (select .cse0 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|))))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2149) |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 3 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) 256) 0)) is different from false [2023-11-06 22:32:19,896 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int))) (= (mod (select (select (store (let ((.cse0 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2147))) (store .cse0 |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse1 (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse1 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|) (select .cse1 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|)))))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2149) |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 3 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) 256) 0)) is different from false [2023-11-06 22:32:20,095 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse11 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (let ((.cse7 (store .cse10 .cse11 1)) (.cse1 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse2 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse3 (store .cse10 .cse11 0)) (.cse4 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse5 (+ 3 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int))) (= (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse0 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse3 .cse4 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse0 .cse1 (select .cse0 .cse2)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2149) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5) 256) 0)) (forall ((v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int))) (= (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse6 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse7 .cse4 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse6 .cse1 (select .cse6 .cse2)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2149) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5) 256) 0)) (forall ((v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int))) (= (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse8 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse7 .cse4 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse8 .cse1 (select .cse8 .cse2)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2149) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5) 256) 0)) (forall ((v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int))) (= (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse9 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse3 .cse4 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse9 .cse1 (select .cse9 .cse2)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2149) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5) 256) 0))))) is different from false [2023-11-06 22:32:20,736 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse3 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse5 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse6 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse7 (+ 3 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2144 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2144))) (let ((.cse4 (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int))) (= (mod (select (select (store (store (store .cse0 |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse1 (select (store (store .cse0 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse4 .cse5 1) .cse6 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse1 .cse2 (select .cse1 .cse3)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2149) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse7) 256) 0)) (not (= (mod (select .cse4 .cse7) 256) 0)))))) (forall ((v_ArrVal_2144 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2144))) (let ((.cse10 (select .cse8 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int))) (= (mod (select (select (store (store (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse9 (select (store (store .cse8 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse10 .cse5 0) .cse6 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse9 .cse2 (select .cse9 .cse3)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2149) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse7) 256) 0)) (not (= (mod (select .cse10 .cse7) 256) 0)))))) (forall ((v_ArrVal_2144 (Array Int Int))) (let ((.cse11 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2144))) (let ((.cse13 (select .cse11 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int))) (= (mod (select (select (store (store (store .cse11 |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse12 (select (store (store .cse11 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse13 .cse5 1) .cse6 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse12 .cse2 (select .cse12 .cse3)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2149) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse7) 256) 0)) (not (= (mod (select .cse13 .cse7) 256) 0)))))) (forall ((v_ArrVal_2144 (Array Int Int))) (let ((.cse14 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2144))) (let ((.cse16 (select .cse14 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int))) (= (mod (select (select (store (store (store .cse14 |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse15 (select (store (store .cse14 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse16 .cse5 0) .cse6 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2147) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse15 .cse2 (select .cse15 .cse3)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2149) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse7) 256) 0)) (not (= (mod (select .cse16 .cse7) 256) 0)))))))) is different from false [2023-11-06 22:32:20,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:20,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631779781] [2023-11-06 22:32:20,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:20,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204903568] [2023-11-06 22:32:20,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204903568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:20,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:32:20,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-06 22:32:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758876537] [2023-11-06 22:32:20,966 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:20,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:32:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:32:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=408, Unknown=19, NotChecked=230, Total=756 [2023-11-06 22:32:20,968 INFO L87 Difference]: Start difference. First operand 596 states and 739 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:32:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:23,258 INFO L93 Difference]: Finished difference Result 1408 states and 1755 transitions. [2023-11-06 22:32:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:32:23,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 190 [2023-11-06 22:32:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:23,263 INFO L225 Difference]: With dead ends: 1408 [2023-11-06 22:32:23,263 INFO L226 Difference]: Without dead ends: 836 [2023-11-06 22:32:23,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=344, Invalid=989, Unknown=19, NotChecked=370, Total=1722 [2023-11-06 22:32:23,266 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1256 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:23,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 890 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 22:32:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-11-06 22:32:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 614. [2023-11-06 22:32:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 535 states have (on average 1.188785046728972) internal successors, (636), 539 states have internal predecessors, (636), 59 states have call successors, (59), 19 states have call predecessors, (59), 19 states have return successors, (59), 55 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-06 22:32:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 754 transitions. [2023-11-06 22:32:23,360 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 754 transitions. Word has length 190 [2023-11-06 22:32:23,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:23,361 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 754 transitions. [2023-11-06 22:32:23,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:32:23,361 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 754 transitions. [2023-11-06 22:32:23,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:32:23,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:23,363 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:23,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:23,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:23,570 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:23,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:23,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1410800705, now seen corresponding path program 1 times [2023-11-06 22:32:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:23,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576471185] [2023-11-06 22:32:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:23,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:23,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:23,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152655276] [2023-11-06 22:32:23,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:23,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:23,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:23,601 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:23,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-06 22:32:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:23,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-06 22:32:23,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:24,270 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:32:24,492 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:32:24,703 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:32:24,916 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:32:25,135 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:32:25,352 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:32:25,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:25,578 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:25,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:25,813 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:26,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:26,048 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:26,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:26,304 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:26,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:26,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:32:26,763 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:32:26,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-11-06 22:32:26,856 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-11-06 22:32:26,880 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 33 [2023-11-06 22:32:26,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:26,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 43 [2023-11-06 22:32:27,030 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2023-11-06 22:32:27,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:27,159 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 50 [2023-11-06 22:32:27,703 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 49 [2023-11-06 22:32:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 93 proven. 294 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2023-11-06 22:32:27,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:28,079 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2235 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 .cse1) 256) 1) (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))) (forall ((v_ArrVal_2235 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse2 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (= (mod (select .cse2 .cse1) 256) 0)))))) is different from false [2023-11-06 22:32:28,134 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse2 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse4 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse4 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|) (select .cse4 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|))))))) (and (forall ((v_ArrVal_2235 (Array Int Int))) (let ((.cse0 (select (store .cse2 |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 .cse1) 256) 0) (not (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2235 (Array Int Int))) (let ((.cse3 (select (store .cse2 |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse3 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (= (mod (select .cse3 .cse1) 256) 1)))))) is different from false [2023-11-06 22:32:28,178 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse4 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse5 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse0 (select (store (let ((.cse2 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233))) (store .cse2 |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse3 (select .cse2 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse3 .cse4 (select .cse3 .cse5))))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 .cse1) 256) 0) (not (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse6 (select (store (let ((.cse7 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233))) (store .cse7 |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse8 (select .cse7 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse8 .cse4 (select .cse8 .cse5))))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse6 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (= (mod (select .cse6 .cse1) 256) 1)))))) is different from false [2023-11-06 22:32:28,234 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse13 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse14 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (let ((.cse5 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse13 .cse14 0))) (.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse3 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse4 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse8 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse13 .cse14 1)))) (and (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse2 (select (store .cse5 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse2 .cse3 (select .cse2 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (= (mod (select .cse0 .cse1) 256) 1)))) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse6 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse7 (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse7 .cse3 (select .cse7 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse6 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (= (mod (select .cse6 .cse1) 256) 0)))) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse9 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse10 (select (store .cse5 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse10 .cse3 (select .cse10 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse9 .cse1) 256) 0) (not (= (mod (select .cse9 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse11 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse12 (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse12 .cse3 (select .cse12 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse11 .cse1) 256) 1) (= (mod (select .cse11 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))))) is different from false [2023-11-06 22:32:28,494 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse4 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse14 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse15 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (or (let ((.cse13 (store .cse15 .cse1 0))) (let ((.cse5 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse13 .cse14 0))) (.cse8 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse13 .cse14 1)))) (and (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse2 (select (store .cse5 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse2 .cse3 (select .cse2 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 .cse1) 256) 0) (not (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse6 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse7 (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse7 .cse3 (select .cse7 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse6 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (= (mod (select .cse6 .cse1) 256) 0)))) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse9 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse10 (select (store .cse5 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse10 .cse3 (select .cse10 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse9 .cse1) 256) 1) (= (mod (select .cse9 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse11 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse12 (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse12 .cse3 (select .cse12 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse11 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (= (mod (select .cse11 .cse1) 256) 1))))))) |c_ULTIMATE.start_step_#t~short17#1|) (or (not |c_ULTIMATE.start_step_#t~short17#1|) (let ((.cse26 (store .cse15 .cse1 1))) (let ((.cse18 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse26 .cse14 1))) (.cse21 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse26 .cse14 0)))) (and (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse16 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse17 (select (store .cse18 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse17 .cse3 (select .cse17 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse16 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (= (mod (select .cse16 .cse1) 256) 0)))) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse19 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse20 (select (store .cse21 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse20 .cse3 (select .cse20 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse19 .cse1) 256) 0) (not (= (mod (select .cse19 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse22 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse23 (select (store .cse18 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse23 .cse3 (select .cse23 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse22 .cse1) 256) 1) (= (mod (select .cse22 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse24 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse25 (select (store .cse21 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse25 .cse3 (select .cse25 .cse4)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse24 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (= (mod (select .cse24 .cse1) 256) 1)))))))))) is different from false [2023-11-06 22:32:29,411 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse5 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse7 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2230 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2230))) (let ((.cse6 (select .cse2 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse0 (select (store (store (store .cse2 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse3 (select (store (store .cse2 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse6 .cse1 0) .cse7 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse3 .cse4 (select .cse3 .cse5)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 .cse1) 256) 1) (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))) (not (= (mod (select .cse6 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))))) (forall ((v_ArrVal_2230 (Array Int Int))) (let ((.cse9 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2230))) (let ((.cse11 (select .cse9 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse8 (select (store (store (store .cse9 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse10 (select (store (store .cse9 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse11 .cse1 1) .cse7 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse10 .cse4 (select .cse10 .cse5)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse8 .cse1) 256) 1) (= (mod (select .cse8 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))) (= (mod (select .cse11 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2230 (Array Int Int))) (let ((.cse14 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2230))) (let ((.cse12 (select .cse14 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse12 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse13 (select (store (store (store .cse14 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse15 (select (store (store .cse14 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse12 .cse1 1) .cse7 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse15 .cse4 (select .cse15 .cse5)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse13 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (= (mod (select .cse13 .cse1) 256) 0)))))))) (forall ((v_ArrVal_2230 (Array Int Int))) (let ((.cse18 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2230))) (let ((.cse16 (select .cse18 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse16 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse17 (select (store (store (store .cse18 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse19 (select (store (store .cse18 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse16 .cse1 1) .cse7 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse19 .cse4 (select .cse19 .cse5)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse17 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (= (mod (select .cse17 .cse1) 256) 1)))))))) (forall ((v_ArrVal_2230 (Array Int Int))) (let ((.cse21 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2230))) (let ((.cse23 (select .cse21 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse20 (select (store (store (store .cse21 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse22 (select (store (store .cse21 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse23 .cse1 0) .cse7 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse22 .cse4 (select .cse22 .cse5)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse20 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (= (mod (select .cse20 .cse1) 256) 0)))) (not (= (mod (select .cse23 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))))) (forall ((v_ArrVal_2230 (Array Int Int))) (let ((.cse25 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2230))) (let ((.cse27 (select .cse25 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse24 (select (store (store (store .cse25 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse26 (select (store (store .cse25 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse27 .cse1 0) .cse7 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse26 .cse4 (select .cse26 .cse5)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse24 .cse1) 256) 0) (not (= (mod (select .cse24 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (not (= (mod (select .cse27 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))))) (forall ((v_ArrVal_2230 (Array Int Int))) (let ((.cse29 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2230))) (let ((.cse31 (select .cse29 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse28 (select (store (store (store .cse29 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse30 (select (store (store .cse29 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse31 .cse1 0) .cse7 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse30 .cse4 (select .cse30 .cse5)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse28 .cse1) 256) 1) (= (mod (select .cse28 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))) (not (= (mod (select .cse31 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))))) (forall ((v_ArrVal_2230 (Array Int Int))) (let ((.cse33 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2230))) (let ((.cse35 (select .cse33 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2235 (Array Int Int)) (v_ArrVal_2233 (Array Int Int))) (let ((.cse32 (select (store (store (store .cse33 |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base| (let ((.cse34 (select (store (store .cse33 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse35 .cse1 1) .cse7 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2233) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (store .cse34 .cse4 (select .cse34 .cse5)))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2235) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse32 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (= (mod (select .cse32 .cse1) 256) 0)))) (= (mod (select .cse35 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))))) is different from false [2023-11-06 22:32:30,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:30,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576471185] [2023-11-06 22:32:30,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:30,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152655276] [2023-11-06 22:32:30,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152655276] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:30,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:32:30,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-06 22:32:30,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13006981] [2023-11-06 22:32:30,136 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:30,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:32:30,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:30,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:32:30,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=436, Unknown=6, NotChecked=282, Total=812 [2023-11-06 22:32:30,138 INFO L87 Difference]: Start difference. First operand 614 states and 754 transitions. Second operand has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-06 22:32:32,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:32,791 INFO L93 Difference]: Finished difference Result 1396 states and 1716 transitions. [2023-11-06 22:32:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 22:32:32,797 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 190 [2023-11-06 22:32:32,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:32,808 INFO L225 Difference]: With dead ends: 1396 [2023-11-06 22:32:32,808 INFO L226 Difference]: Without dead ends: 810 [2023-11-06 22:32:32,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=337, Invalid=1321, Unknown=6, NotChecked=498, Total=2162 [2023-11-06 22:32:32,812 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1024 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:32,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 922 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 22:32:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2023-11-06 22:32:32,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 622. [2023-11-06 22:32:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 545 states have (on average 1.1761467889908257) internal successors, (641), 548 states have internal predecessors, (641), 57 states have call successors, (57), 19 states have call predecessors, (57), 19 states have return successors, (57), 54 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-06 22:32:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 755 transitions. [2023-11-06 22:32:32,955 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 755 transitions. Word has length 190 [2023-11-06 22:32:32,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:32,955 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 755 transitions. [2023-11-06 22:32:32,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-06 22:32:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 755 transitions. [2023-11-06 22:32:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:32:32,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:32,958 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:32,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:33,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-06 22:32:33,165 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:33,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:33,166 INFO L85 PathProgramCache]: Analyzing trace with hash -389102465, now seen corresponding path program 1 times [2023-11-06 22:32:33,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:33,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146931018] [2023-11-06 22:32:33,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:33,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:33,196 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:33,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251176474] [2023-11-06 22:32:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:33,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:33,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:33,198 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:33,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-06 22:32:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:33,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:32:33,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:34,709 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 30 [2023-11-06 22:32:34,712 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 50 [2023-11-06 22:32:34,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-11-06 22:32:34,852 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 50 [2023-11-06 22:32:34,855 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 74 [2023-11-06 22:32:34,869 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 44 [2023-11-06 22:32:34,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:34,979 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 73 [2023-11-06 22:32:35,120 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 83 [2023-11-06 22:32:35,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:35,346 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 80 [2023-11-06 22:32:35,992 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 68 [2023-11-06 22:32:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:32:36,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:36,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146931018] [2023-11-06 22:32:36,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251176474] [2023-11-06 22:32:36,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251176474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:36,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:36,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:32:36,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269438572] [2023-11-06 22:32:36,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:36,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:32:36,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:32:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:32:36,015 INFO L87 Difference]: Start difference. First operand 622 states and 755 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:37,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:37,473 INFO L93 Difference]: Finished difference Result 1492 states and 1810 transitions. [2023-11-06 22:32:37,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:32:37,474 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 190 [2023-11-06 22:32:37,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:37,478 INFO L225 Difference]: With dead ends: 1492 [2023-11-06 22:32:37,478 INFO L226 Difference]: Without dead ends: 898 [2023-11-06 22:32:37,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:32:37,479 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 277 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:37,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 714 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:32:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-11-06 22:32:37,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 742. [2023-11-06 22:32:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 656 states have (on average 1.170731707317073) internal successors, (768), 660 states have internal predecessors, (768), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-06 22:32:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 890 transitions. [2023-11-06 22:32:37,623 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 890 transitions. Word has length 190 [2023-11-06 22:32:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:37,623 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 890 transitions. [2023-11-06 22:32:37,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:37,624 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 890 transitions. [2023-11-06 22:32:37,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:32:37,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:37,626 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:37,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-06 22:32:37,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-06 22:32:37,833 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:37,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:37,834 INFO L85 PathProgramCache]: Analyzing trace with hash -74542428, now seen corresponding path program 1 times [2023-11-06 22:32:37,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:37,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045953970] [2023-11-06 22:32:37,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:37,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:37,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:37,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498144336] [2023-11-06 22:32:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:37,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:37,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:37,874 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:37,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-06 22:32:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:38,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:32:38,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:39,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 31 [2023-11-06 22:32:39,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 51 [2023-11-06 22:32:39,552 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-11-06 22:32:39,677 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2023-11-06 22:32:39,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 76 [2023-11-06 22:32:39,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 46 [2023-11-06 22:32:39,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:39,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 77 [2023-11-06 22:32:40,080 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 73 [2023-11-06 22:32:40,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:40,246 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 77 [2023-11-06 22:32:40,727 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 69 [2023-11-06 22:32:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:32:40,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:40,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:40,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045953970] [2023-11-06 22:32:40,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:40,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498144336] [2023-11-06 22:32:40,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498144336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:40,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:40,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:32:40,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904829565] [2023-11-06 22:32:40,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:40,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:32:40,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:40,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:32:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:32:40,748 INFO L87 Difference]: Start difference. First operand 742 states and 890 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:41,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:41,734 INFO L93 Difference]: Finished difference Result 1487 states and 1787 transitions. [2023-11-06 22:32:41,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:32:41,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 191 [2023-11-06 22:32:41,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:41,739 INFO L225 Difference]: With dead ends: 1487 [2023-11-06 22:32:41,739 INFO L226 Difference]: Without dead ends: 777 [2023-11-06 22:32:41,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:32:41,741 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 254 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:41,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 522 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:32:41,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-11-06 22:32:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 742. [2023-11-06 22:32:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 656 states have (on average 1.1692073170731707) internal successors, (767), 660 states have internal predecessors, (767), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-06 22:32:41,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 889 transitions. [2023-11-06 22:32:41,881 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 889 transitions. Word has length 191 [2023-11-06 22:32:41,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:41,881 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 889 transitions. [2023-11-06 22:32:41,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 889 transitions. [2023-11-06 22:32:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:32:41,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:41,884 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:41,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-06 22:32:42,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-06 22:32:42,085 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:42,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1828809433, now seen corresponding path program 1 times [2023-11-06 22:32:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:42,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726138840] [2023-11-06 22:32:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:42,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:42,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:42,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124377847] [2023-11-06 22:32:42,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:42,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:42,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:42,116 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:42,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-06 22:32:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:42,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-06 22:32:42,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:43,648 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2023-11-06 22:32:43,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 62 [2023-11-06 22:32:43,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-11-06 22:32:43,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 51 [2023-11-06 22:32:43,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 75 [2023-11-06 22:32:43,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 45 [2023-11-06 22:32:43,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:43,907 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 75 [2023-11-06 22:32:44,098 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 78 [2023-11-06 22:32:44,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:44,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 43 [2023-11-06 22:32:44,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 44 [2023-11-06 22:32:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:32:44,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:44,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:44,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726138840] [2023-11-06 22:32:44,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:44,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124377847] [2023-11-06 22:32:44,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124377847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:44,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:44,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:32:44,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216000836] [2023-11-06 22:32:44,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:44,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:32:44,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:44,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:32:44,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:32:44,900 INFO L87 Difference]: Start difference. First operand 742 states and 889 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:47,094 INFO L93 Difference]: Finished difference Result 1646 states and 1980 transitions. [2023-11-06 22:32:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:32:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 191 [2023-11-06 22:32:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:47,100 INFO L225 Difference]: With dead ends: 1646 [2023-11-06 22:32:47,100 INFO L226 Difference]: Without dead ends: 936 [2023-11-06 22:32:47,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:32:47,101 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 523 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:47,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1153 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 22:32:47,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2023-11-06 22:32:47,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 746. [2023-11-06 22:32:47,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 660 states have (on average 1.1712121212121211) internal successors, (773), 664 states have internal predecessors, (773), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-06 22:32:47,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 895 transitions. [2023-11-06 22:32:47,205 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 895 transitions. Word has length 191 [2023-11-06 22:32:47,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:47,205 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 895 transitions. [2023-11-06 22:32:47,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 895 transitions. [2023-11-06 22:32:47,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:32:47,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:47,207 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:47,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:47,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:47,414 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:47,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:47,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1764557989, now seen corresponding path program 1 times [2023-11-06 22:32:47,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:47,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068010723] [2023-11-06 22:32:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:47,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:47,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:47,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093979015] [2023-11-06 22:32:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:47,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:47,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:47,446 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:47,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-06 22:32:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:47,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:32:47,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:47,810 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-11-06 22:32:47,824 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:32:47,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 13 [2023-11-06 22:32:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:32:47,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:47,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:47,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068010723] [2023-11-06 22:32:47,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:47,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093979015] [2023-11-06 22:32:47,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093979015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:47,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:47,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:32:47,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332977450] [2023-11-06 22:32:47,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:47,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:32:47,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:47,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:32:47,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:32:47,837 INFO L87 Difference]: Start difference. First operand 746 states and 895 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:48,125 INFO L93 Difference]: Finished difference Result 1480 states and 1785 transitions. [2023-11-06 22:32:48,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:32:48,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 191 [2023-11-06 22:32:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:48,129 INFO L225 Difference]: With dead ends: 1480 [2023-11-06 22:32:48,129 INFO L226 Difference]: Without dead ends: 766 [2023-11-06 22:32:48,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:32:48,131 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 4 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:48,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 534 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:32:48,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-11-06 22:32:48,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 738. [2023-11-06 22:32:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 652 states have (on average 1.1671779141104295) internal successors, (761), 656 states have internal predecessors, (761), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-06 22:32:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 883 transitions. [2023-11-06 22:32:48,260 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 883 transitions. Word has length 191 [2023-11-06 22:32:48,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:48,261 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 883 transitions. [2023-11-06 22:32:48,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:48,261 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 883 transitions. [2023-11-06 22:32:48,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:32:48,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:48,264 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:48,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-06 22:32:48,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:48,470 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:48,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:48,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1320549254, now seen corresponding path program 1 times [2023-11-06 22:32:48,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:48,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737814479] [2023-11-06 22:32:48,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:48,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:48,500 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:48,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371031842] [2023-11-06 22:32:48,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:48,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:48,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:48,502 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:48,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-06 22:32:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:48,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:32:48,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:50,044 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 31 [2023-11-06 22:32:50,048 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 51 [2023-11-06 22:32:50,058 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-11-06 22:32:50,183 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2023-11-06 22:32:50,188 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 76 [2023-11-06 22:32:50,204 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 46 [2023-11-06 22:32:50,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:50,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 77 [2023-11-06 22:32:50,591 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 87 [2023-11-06 22:32:50,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:50,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 84 [2023-11-06 22:32:51,419 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 72 [2023-11-06 22:32:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:32:51,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:51,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:51,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737814479] [2023-11-06 22:32:51,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:51,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371031842] [2023-11-06 22:32:51,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371031842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:51,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:51,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:32:51,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067087729] [2023-11-06 22:32:51,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:51,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:32:51,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:51,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:32:51,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:32:51,439 INFO L87 Difference]: Start difference. First operand 738 states and 883 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:52,689 INFO L93 Difference]: Finished difference Result 1580 states and 1894 transitions. [2023-11-06 22:32:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:32:52,689 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 192 [2023-11-06 22:32:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:52,693 INFO L225 Difference]: With dead ends: 1580 [2023-11-06 22:32:52,693 INFO L226 Difference]: Without dead ends: 874 [2023-11-06 22:32:52,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:32:52,695 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 588 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:52,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 537 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:32:52,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2023-11-06 22:32:52,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 732. [2023-11-06 22:32:52,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 646 states have (on average 1.1640866873065014) internal successors, (752), 650 states have internal predecessors, (752), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-06 22:32:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 874 transitions. [2023-11-06 22:32:52,820 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 874 transitions. Word has length 192 [2023-11-06 22:32:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:52,820 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 874 transitions. [2023-11-06 22:32:52,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 874 transitions. [2023-11-06 22:32:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:32:52,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:52,823 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:52,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:53,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:53,028 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:53,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:53,029 INFO L85 PathProgramCache]: Analyzing trace with hash -40685576, now seen corresponding path program 1 times [2023-11-06 22:32:53,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:53,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329335294] [2023-11-06 22:32:53,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:53,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:53,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:53,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498452193] [2023-11-06 22:32:53,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:53,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:53,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:53,065 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:53,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-06 22:32:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:53,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:32:53,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:32:53,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:53,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:53,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329335294] [2023-11-06 22:32:53,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:53,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498452193] [2023-11-06 22:32:53,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498452193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:53,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:53,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:32:53,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367690445] [2023-11-06 22:32:53,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:53,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:32:53,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:53,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:32:53,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:32:53,461 INFO L87 Difference]: Start difference. First operand 732 states and 874 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:53,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:53,595 INFO L93 Difference]: Finished difference Result 1472 states and 1768 transitions. [2023-11-06 22:32:53,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:32:53,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 192 [2023-11-06 22:32:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:53,600 INFO L225 Difference]: With dead ends: 1472 [2023-11-06 22:32:53,600 INFO L226 Difference]: Without dead ends: 772 [2023-11-06 22:32:53,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:32:53,602 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 114 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:53,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 750 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:32:53,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-11-06 22:32:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 735. [2023-11-06 22:32:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 649 states have (on average 1.1633281972265024) internal successors, (755), 653 states have internal predecessors, (755), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-06 22:32:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 877 transitions. [2023-11-06 22:32:53,732 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 877 transitions. Word has length 192 [2023-11-06 22:32:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:53,732 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 877 transitions. [2023-11-06 22:32:53,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 877 transitions. [2023-11-06 22:32:53,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:32:53,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:53,735 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:53,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-06 22:32:53,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-06 22:32:53,941 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:53,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:53,941 INFO L85 PathProgramCache]: Analyzing trace with hash 925030200, now seen corresponding path program 1 times [2023-11-06 22:32:53,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:53,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624788221] [2023-11-06 22:32:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:53,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:53,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:53,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180127476] [2023-11-06 22:32:53,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:53,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:53,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:53,976 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:53,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-06 22:32:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:54,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:32:54,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:55,606 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-11-06 22:32:55,685 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2023-11-06 22:32:55,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 64 [2023-11-06 22:32:55,701 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 34 [2023-11-06 22:32:55,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:55,853 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 45 [2023-11-06 22:32:55,936 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2023-11-06 22:32:56,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:56,065 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 52 [2023-11-06 22:32:56,436 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 48 [2023-11-06 22:32:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:32:56,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:56,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:56,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624788221] [2023-11-06 22:32:56,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:56,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180127476] [2023-11-06 22:32:56,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180127476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:56,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:56,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:32:56,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647059428] [2023-11-06 22:32:56,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:56,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:32:56,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:56,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:32:56,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:32:56,483 INFO L87 Difference]: Start difference. First operand 735 states and 877 transitions. Second operand has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 14 states have internal predecessors, (80), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:58,941 INFO L93 Difference]: Finished difference Result 1576 states and 1882 transitions. [2023-11-06 22:32:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:32:58,949 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 14 states have internal predecessors, (80), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 192 [2023-11-06 22:32:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:58,953 INFO L225 Difference]: With dead ends: 1576 [2023-11-06 22:32:58,954 INFO L226 Difference]: Without dead ends: 873 [2023-11-06 22:32:58,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2023-11-06 22:32:58,956 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 607 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:58,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 1390 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 22:32:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2023-11-06 22:32:59,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 780. [2023-11-06 22:32:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 685 states have (on average 1.164963503649635) internal successors, (798), 690 states have internal predecessors, (798), 67 states have call successors, (67), 27 states have call predecessors, (67), 27 states have return successors, (67), 62 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-06 22:32:59,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 932 transitions. [2023-11-06 22:32:59,062 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 932 transitions. Word has length 192 [2023-11-06 22:32:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:59,073 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 932 transitions. [2023-11-06 22:32:59,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 14 states have internal predecessors, (80), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 932 transitions. [2023-11-06 22:32:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:32:59,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:59,076 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:59,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-06 22:32:59,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-06 22:32:59,283 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:59,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:59,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1720064963, now seen corresponding path program 1 times [2023-11-06 22:32:59,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:59,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128299258] [2023-11-06 22:32:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:59,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:59,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322737462] [2023-11-06 22:32:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:59,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:59,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:59,314 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:59,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-06 22:32:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:59,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 22:32:59,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:59,902 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-06 22:33:00,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-06 22:33:00,174 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-06 22:33:00,309 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-06 22:33:00,444 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-06 22:33:00,574 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-06 22:33:00,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:00,711 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:00,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:00,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:00,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:00,984 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:01,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:01,128 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:01,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:01,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:01,377 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2023-11-06 22:33:01,379 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 58 [2023-11-06 22:33:01,390 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:01,391 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2023-11-06 22:33:01,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 58 [2023-11-06 22:33:01,489 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:01,490 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 86 [2023-11-06 22:33:01,524 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 48 [2023-11-06 22:33:01,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:01,620 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 85 [2023-11-06 22:33:01,821 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:01,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 82 [2023-11-06 22:33:01,922 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:01,922 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 54 [2023-11-06 22:33:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 93 proven. 294 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2023-11-06 22:33:01,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:02,049 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2827 (Array Int Int))) (< (mod (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 .cse1 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2827) |c_~#BOOL_unsigned_char_Array_0~0.base|) |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 1)) (forall ((v_ArrVal_2827 (Array Int Int))) (< (mod (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 .cse1 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2827) |c_~#BOOL_unsigned_char_Array_0~0.base|) |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 1)))) is different from false [2023-11-06 22:33:02,089 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse4 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (let ((.cse0 (store .cse3 .cse4 1)) (.cse2 (store .cse3 .cse4 0)) (.cse1 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2827 (Array Int Int))) (< (mod (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 .cse1 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2827) |c_~#BOOL_unsigned_char_Array_0~0.base|) |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 1)) (forall ((v_ArrVal_2827 (Array Int Int))) (< (mod (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 .cse1 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2827) |c_~#BOOL_unsigned_char_Array_0~0.base|) |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 1)) (forall ((v_ArrVal_2827 (Array Int Int))) (< (mod (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse2 .cse1 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2827) |c_~#BOOL_unsigned_char_Array_0~0.base|) |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 1)) (forall ((v_ArrVal_2827 (Array Int Int))) (< (mod (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse2 .cse1 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2827) |c_~#BOOL_unsigned_char_Array_0~0.base|) |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 1))))) is different from false [2023-11-06 22:33:02,177 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse2 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2824 (Array Int Int)) (v_ArrVal_2827 (Array Int Int))) (< (mod (select (select (store (let ((.cse0 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2824))) (store .cse0 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1 1) .cse2 1))) |c_~#signed_char_Array_0~0.base| v_ArrVal_2827) |c_~#BOOL_unsigned_char_Array_0~0.base|) |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 1)) (forall ((v_ArrVal_2824 (Array Int Int)) (v_ArrVal_2827 (Array Int Int))) (< (mod (select (select (store (let ((.cse3 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2824))) (store .cse3 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store (select .cse3 |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1 0) .cse2 1))) |c_~#signed_char_Array_0~0.base| v_ArrVal_2827) |c_~#BOOL_unsigned_char_Array_0~0.base|) |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 1)) (forall ((v_ArrVal_2824 (Array Int Int)) (v_ArrVal_2827 (Array Int Int))) (< (mod (select (select (store (let ((.cse4 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2824))) (store .cse4 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store (select .cse4 |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1 1) .cse2 0))) |c_~#signed_char_Array_0~0.base| v_ArrVal_2827) |c_~#BOOL_unsigned_char_Array_0~0.base|) |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 1)) (forall ((v_ArrVal_2824 (Array Int Int)) (v_ArrVal_2827 (Array Int Int))) (< (mod (select (select (store (let ((.cse5 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2824))) (store .cse5 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store (select .cse5 |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1 0) .cse2 0))) |c_~#signed_char_Array_0~0.base| v_ArrVal_2827) |c_~#BOOL_unsigned_char_Array_0~0.base|) |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 1)))) is different from false [2023-11-06 22:33:02,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:02,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128299258] [2023-11-06 22:33:02,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:33:02,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322737462] [2023-11-06 22:33:02,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322737462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:02,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:02,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-06 22:33:02,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123837795] [2023-11-06 22:33:02,249 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:02,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:33:02,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:02,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:33:02,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=214, Unknown=8, NotChecked=96, Total=380 [2023-11-06 22:33:02,250 INFO L87 Difference]: Start difference. First operand 780 states and 932 transitions. Second operand has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-06 22:33:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:03,510 INFO L93 Difference]: Finished difference Result 1584 states and 1893 transitions. [2023-11-06 22:33:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:33:03,511 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 192 [2023-11-06 22:33:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:03,514 INFO L225 Difference]: With dead ends: 1584 [2023-11-06 22:33:03,514 INFO L226 Difference]: Without dead ends: 836 [2023-11-06 22:33:03,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=494, Unknown=8, NotChecked=150, Total=812 [2023-11-06 22:33:03,516 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 145 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:03,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 444 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:33:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-11-06 22:33:03,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 788. [2023-11-06 22:33:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 693 states have (on average 1.1572871572871573) internal successors, (802), 698 states have internal predecessors, (802), 67 states have call successors, (67), 27 states have call predecessors, (67), 27 states have return successors, (67), 62 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-06 22:33:03,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 936 transitions. [2023-11-06 22:33:03,627 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 936 transitions. Word has length 192 [2023-11-06 22:33:03,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:03,627 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 936 transitions. [2023-11-06 22:33:03,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-06 22:33:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 936 transitions. [2023-11-06 22:33:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:33:03,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:03,630 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:03,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:03,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-06 22:33:03,837 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:03,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1994824577, now seen corresponding path program 1 times [2023-11-06 22:33:03,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:03,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392543385] [2023-11-06 22:33:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:03,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:33:03,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262804196] [2023-11-06 22:33:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:03,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:03,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:03,869 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:03,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-06 22:33:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:04,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-06 22:33:04,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:04,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:33:04,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:33:05,058 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:33:05,286 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:33:05,521 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:33:05,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:33:05,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:05,959 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:06,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:06,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:06,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:06,409 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:06,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:06,620 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:06,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:06,969 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:07,084 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:33:07,177 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-11-06 22:33:07,184 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-11-06 22:33:07,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 33 [2023-11-06 22:33:07,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:07,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 43 [2023-11-06 22:33:07,394 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 47 [2023-11-06 22:33:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:07,497 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 43 [2023-11-06 22:33:07,928 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 46 [2023-11-06 22:33:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 93 proven. 294 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2023-11-06 22:33:07,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:08,286 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2915 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 .cse1) 256) 1) (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))) (forall ((v_ArrVal_2915 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse2 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (= (mod (select .cse2 .cse1) 256) 0)))))) is different from false [2023-11-06 22:33:08,344 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse2 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse3 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse2 .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 .cse1) 256) 1) (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))) (forall ((v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse4 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse2 .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse4 .cse1) 256) 0) (not (= (mod (select .cse4 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))))) is different from false [2023-11-06 22:33:08,417 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse3 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse0 (select (store (let ((.cse2 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912))) (store .cse2 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select .cse2 |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 .cse1) 256) 0) (not (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse4 (select (store (let ((.cse5 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912))) (store .cse5 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select .cse5 |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913))) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse4 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (= (mod (select .cse4 .cse1) 256) 1)))))) is different from false [2023-11-06 22:33:08,482 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse9 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (let ((.cse5 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse8 .cse9 1))) (.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse2 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse8 .cse9 0))) (.cse3 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse2 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (= (mod (select .cse0 .cse1) 256) 1)))) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse4 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse5 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse4 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (= (mod (select .cse4 .cse1) 256) 1)))) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse6 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse5 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse6 .cse1) 256) 0) (not (= (mod (select .cse6 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse7 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse2 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse7 .cse1) 256) 0) (not (= (mod (select .cse7 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))))))) is different from false [2023-11-06 22:33:08,712 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse9 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse10 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (or (let ((.cse8 (store .cse10 .cse1 1))) (let ((.cse2 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse8 .cse9 0))) (.cse6 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse8 .cse9 1)))) (and (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse2 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 .cse1) 256) 0) (not (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse4 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse2 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse4 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (= (mod (select .cse4 .cse1) 256) 1)))) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse5 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse6 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse5 .cse1) 256) 0) (not (= (mod (select .cse5 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse7 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse6 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse7 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (= (mod (select .cse7 .cse1) 256) 1))))))) (not |c_ULTIMATE.start_step_#t~short17#1|)) (or (let ((.cse17 (store .cse10 .cse1 0))) (let ((.cse12 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse17 .cse9 1))) (.cse14 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse17 .cse9 0)))) (and (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse11 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse12 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse11 .cse1) 256) 0) (not (= (mod (select .cse11 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse13 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse14 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= 0 (mod (select .cse13 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256)) (= (mod (select .cse13 .cse1) 256) 1)))) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse15 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse12 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse15 .cse1) 256) 1) (= (mod (select .cse15 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse16 (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store .cse14 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= 0 (mod (select .cse16 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256))) (= (mod (select .cse16 .cse1) 256) 0))))))) |c_ULTIMATE.start_step_#t~short17#1|))) is different from false [2023-11-06 22:33:09,598 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse4 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse5 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_2909 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2909))) (let ((.cse0 (select .cse3 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse1 (select (store (store (store .cse3 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store (store .cse3 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse0 .cse2 1) .cse4 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= 0 (mod (select .cse1 .cse2) 256)) (not (= (mod (select .cse1 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))))))) (forall ((v_ArrVal_2909 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2909))) (let ((.cse6 (select .cse8 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse6 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse7 (select (store (store (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store (store .cse8 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse6 .cse2 1) .cse4 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= 1 (mod (select .cse7 .cse2) 256)) (= (mod (select .cse7 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))))))) (forall ((v_ArrVal_2909 (Array Int Int))) (let ((.cse11 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2909))) (let ((.cse9 (select .cse11 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse9 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse10 (select (store (store (store .cse11 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store (store .cse11 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse9 .cse2 0) .cse4 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse10 .cse2) 256) 1) (= (mod (select .cse10 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))))))) (forall ((v_ArrVal_2909 (Array Int Int))) (let ((.cse14 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2909))) (let ((.cse12 (select .cse14 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse12 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse13 (select (store (store (store .cse14 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store (store .cse14 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse12 .cse2 0) .cse4 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse13 .cse2) 256) 1) (= (mod (select .cse13 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))))))) (forall ((v_ArrVal_2909 (Array Int Int))) (let ((.cse16 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2909))) (let ((.cse17 (select .cse16 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse15 (select (store (store (store .cse16 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store (store .cse16 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse17 .cse2 1) .cse4 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse15 .cse2) 256) 1) (= (mod (select .cse15 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))) (= (mod (select .cse17 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))) (forall ((v_ArrVal_2909 (Array Int Int))) (let ((.cse19 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2909))) (let ((.cse20 (select .cse19 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse18 (select (store (store (store .cse19 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store (store .cse19 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse20 .cse2 0) .cse4 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse18 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (= (mod (select .cse18 .cse2) 256) 0)))) (not (= (mod (select .cse20 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))))) (forall ((v_ArrVal_2909 (Array Int Int))) (let ((.cse22 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2909))) (let ((.cse23 (select .cse22 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse21 (select (store (store (store .cse22 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store (store .cse22 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse23 .cse2 0) .cse4 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse21 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (= (mod (select .cse21 .cse2) 256) 0)))) (not (= (mod (select .cse23 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))))) (forall ((v_ArrVal_2909 (Array Int Int))) (let ((.cse25 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_2909))) (let ((.cse26 (select .cse25 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2913 Int) (v_ArrVal_2915 (Array Int Int))) (let ((.cse24 (select (store (store (store .cse25 |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select (store (store .cse25 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse26 .cse2 1) .cse4 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_2912) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 v_ArrVal_2913)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_2915) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse24 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (= (mod (select .cse24 .cse2) 256) 0)))) (= (mod (select .cse26 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))))) is different from false [2023-11-06 22:33:10,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:10,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392543385] [2023-11-06 22:33:10,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:33:10,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262804196] [2023-11-06 22:33:10,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262804196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:10,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:10,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-06 22:33:10,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478873600] [2023-11-06 22:33:10,327 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:10,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:33:10,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:10,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:33:10,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=394, Unknown=7, NotChecked=270, Total=756 [2023-11-06 22:33:10,329 INFO L87 Difference]: Start difference. First operand 788 states and 936 transitions. Second operand has 18 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-06 22:33:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:12,355 INFO L93 Difference]: Finished difference Result 1588 states and 1878 transitions. [2023-11-06 22:33:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:33:12,355 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 192 [2023-11-06 22:33:12,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:12,359 INFO L225 Difference]: With dead ends: 1588 [2023-11-06 22:33:12,359 INFO L226 Difference]: Without dead ends: 832 [2023-11-06 22:33:12,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=236, Invalid=971, Unknown=7, NotChecked=426, Total=1640 [2023-11-06 22:33:12,362 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 443 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:12,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 791 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:33:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-11-06 22:33:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 738. [2023-11-06 22:33:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 643 states have (on average 1.1617418351477449) internal successors, (747), 648 states have internal predecessors, (747), 67 states have call successors, (67), 27 states have call predecessors, (67), 27 states have return successors, (67), 62 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-06 22:33:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 881 transitions. [2023-11-06 22:33:12,470 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 881 transitions. Word has length 192 [2023-11-06 22:33:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:12,470 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 881 transitions. [2023-11-06 22:33:12,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-06 22:33:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 881 transitions. [2023-11-06 22:33:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-06 22:33:12,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:12,472 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:12,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-06 22:33:12,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-06 22:33:12,672 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:12,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:12,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1231321246, now seen corresponding path program 1 times [2023-11-06 22:33:12,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:12,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540400137] [2023-11-06 22:33:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:12,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:12,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:33:12,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817014597] [2023-11-06 22:33:12,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:12,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:12,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:12,701 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:12,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-06 22:33:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:13,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:33:13,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:14,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2023-11-06 22:33:14,367 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 62 [2023-11-06 22:33:14,385 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-11-06 22:33:14,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:14,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 34 [2023-11-06 22:33:14,573 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 35 [2023-11-06 22:33:14,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:14,636 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 34 [2023-11-06 22:33:15,032 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2023-11-06 22:33:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:33:15,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:15,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540400137] [2023-11-06 22:33:15,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:33:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817014597] [2023-11-06 22:33:15,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817014597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:15,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:15,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:33:15,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762449708] [2023-11-06 22:33:15,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:15,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:33:15,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:33:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:33:15,088 INFO L87 Difference]: Start difference. First operand 738 states and 881 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:33:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:16,147 INFO L93 Difference]: Finished difference Result 1523 states and 1832 transitions. [2023-11-06 22:33:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:33:16,148 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 193 [2023-11-06 22:33:16,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:16,153 INFO L225 Difference]: With dead ends: 1523 [2023-11-06 22:33:16,153 INFO L226 Difference]: Without dead ends: 817 [2023-11-06 22:33:16,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:33:16,155 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 299 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:16,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 596 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:33:16,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-11-06 22:33:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 761. [2023-11-06 22:33:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 664 states have (on average 1.1566265060240963) internal successors, (768), 669 states have internal predecessors, (768), 67 states have call successors, (67), 29 states have call predecessors, (67), 29 states have return successors, (67), 62 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-06 22:33:16,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 902 transitions. [2023-11-06 22:33:16,298 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 902 transitions. Word has length 193 [2023-11-06 22:33:16,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:16,298 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 902 transitions. [2023-11-06 22:33:16,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:33:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 902 transitions. [2023-11-06 22:33:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-06 22:33:16,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:16,301 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:16,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:16,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:16,508 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:16,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:16,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1624348256, now seen corresponding path program 1 times [2023-11-06 22:33:16,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:16,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738589008] [2023-11-06 22:33:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:16,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:16,537 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:33:16,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478897852] [2023-11-06 22:33:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:16,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:16,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:16,539 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:16,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-06 22:33:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:16,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:33:16,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:16,952 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:16,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2023-11-06 22:33:17,755 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2023-11-06 22:33:17,758 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 63 [2023-11-06 22:33:17,776 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2023-11-06 22:33:17,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:17,858 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2023-11-06 22:33:17,932 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:17,933 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 40 [2023-11-06 22:33:17,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:17,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2023-11-06 22:33:18,276 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:18,276 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 39 [2023-11-06 22:33:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:33:18,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:18,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738589008] [2023-11-06 22:33:18,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:33:18,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478897852] [2023-11-06 22:33:18,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478897852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:18,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:18,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:33:18,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015621795] [2023-11-06 22:33:18,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:18,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:33:18,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:18,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:33:18,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:33:18,303 INFO L87 Difference]: Start difference. First operand 761 states and 902 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:33:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:19,378 INFO L93 Difference]: Finished difference Result 1595 states and 1902 transitions. [2023-11-06 22:33:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:33:19,378 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 193 [2023-11-06 22:33:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:19,382 INFO L225 Difference]: With dead ends: 1595 [2023-11-06 22:33:19,382 INFO L226 Difference]: Without dead ends: 866 [2023-11-06 22:33:19,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:33:19,384 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 377 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:19,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 539 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:33:19,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2023-11-06 22:33:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 795. [2023-11-06 22:33:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 690 states have (on average 1.1507246376811595) internal successors, (794), 695 states have internal predecessors, (794), 71 states have call successors, (71), 33 states have call predecessors, (71), 33 states have return successors, (71), 66 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-06 22:33:19,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 936 transitions. [2023-11-06 22:33:19,513 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 936 transitions. Word has length 193 [2023-11-06 22:33:19,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:19,513 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 936 transitions. [2023-11-06 22:33:19,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:33:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 936 transitions. [2023-11-06 22:33:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-06 22:33:19,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:19,516 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:19,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:19,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-06 22:33:19,723 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:19,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:19,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1366182818, now seen corresponding path program 1 times [2023-11-06 22:33:19,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:19,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82244751] [2023-11-06 22:33:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:19,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:19,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:33:19,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729098894] [2023-11-06 22:33:19,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:19,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:19,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:19,766 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:19,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-06 22:33:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:20,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:33:20,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:21,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 31 [2023-11-06 22:33:21,692 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 51 [2023-11-06 22:33:21,703 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-11-06 22:33:21,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:21,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 35 [2023-11-06 22:33:21,884 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 36 [2023-11-06 22:33:21,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:21,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 35 [2023-11-06 22:33:22,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 39 [2023-11-06 22:33:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:33:22,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:22,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:22,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82244751] [2023-11-06 22:33:22,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:33:22,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729098894] [2023-11-06 22:33:22,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729098894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:22,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:22,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:33:22,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031579352] [2023-11-06 22:33:22,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:22,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:33:22,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:22,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:33:22,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:33:22,276 INFO L87 Difference]: Start difference. First operand 795 states and 936 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:33:23,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:23,065 INFO L93 Difference]: Finished difference Result 1525 states and 1788 transitions. [2023-11-06 22:33:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:33:23,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 193 [2023-11-06 22:33:23,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:23,068 INFO L225 Difference]: With dead ends: 1525 [2023-11-06 22:33:23,068 INFO L226 Difference]: Without dead ends: 778 [2023-11-06 22:33:23,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:33:23,070 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 309 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:23,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 344 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:33:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2023-11-06 22:33:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2023-11-06 22:33:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 671 states have (on average 1.1326378539493294) internal successors, (760), 676 states have internal predecessors, (760), 71 states have call successors, (71), 35 states have call predecessors, (71), 35 states have return successors, (71), 66 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-06 22:33:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 902 transitions. [2023-11-06 22:33:23,217 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 902 transitions. Word has length 193 [2023-11-06 22:33:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:23,218 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 902 transitions. [2023-11-06 22:33:23,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:33:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 902 transitions. [2023-11-06 22:33:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-06 22:33:23,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:23,220 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:23,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:23,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:23,428 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:23,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:23,428 INFO L85 PathProgramCache]: Analyzing trace with hash -443969132, now seen corresponding path program 1 times [2023-11-06 22:33:23,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:23,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916481789] [2023-11-06 22:33:23,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:23,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:23,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:33:23,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705620935] [2023-11-06 22:33:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:23,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:23,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:23,459 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:23,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-06 22:33:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:23,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:33:23,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:25,008 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 22 [2023-11-06 22:33:25,013 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:33:25,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:33:25,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:25,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:33:25,119 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 22:33:25,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:25,145 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:33:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:33:25,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:25,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:25,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916481789] [2023-11-06 22:33:25,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:33:25,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705620935] [2023-11-06 22:33:25,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705620935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:25,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:25,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:33:25,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209334365] [2023-11-06 22:33:25,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:25,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:33:25,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:25,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:33:25,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:33:25,301 INFO L87 Difference]: Start difference. First operand 778 states and 902 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:33:26,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:26,132 INFO L93 Difference]: Finished difference Result 1797 states and 2074 transitions. [2023-11-06 22:33:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:33:26,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 195 [2023-11-06 22:33:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:26,136 INFO L225 Difference]: With dead ends: 1797 [2023-11-06 22:33:26,136 INFO L226 Difference]: Without dead ends: 1067 [2023-11-06 22:33:26,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:33:26,139 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 272 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:26,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 385 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:33:26,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2023-11-06 22:33:26,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 952. [2023-11-06 22:33:26,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 823 states have (on average 1.1239368165249088) internal successors, (925), 829 states have internal predecessors, (925), 84 states have call successors, (84), 44 states have call predecessors, (84), 44 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-06 22:33:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1093 transitions. [2023-11-06 22:33:26,346 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1093 transitions. Word has length 195 [2023-11-06 22:33:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:26,347 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1093 transitions. [2023-11-06 22:33:26,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:33:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1093 transitions. [2023-11-06 22:33:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-06 22:33:26,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:26,350 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:26,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:26,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:26,552 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:26,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:26,553 INFO L85 PathProgramCache]: Analyzing trace with hash -14585975, now seen corresponding path program 1 times [2023-11-06 22:33:26,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:26,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782333513] [2023-11-06 22:33:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:26,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:26,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:33:26,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203417324] [2023-11-06 22:33:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:26,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:26,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:26,584 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:26,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-06 22:33:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:27,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 22:33:27,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:27,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:33:28,029 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:33:28,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:28,195 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:28,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:28,389 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:28,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:28,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:28,663 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:28,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:28,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:28,902 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 30 [2023-11-06 22:33:28,905 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 50 [2023-11-06 22:33:28,920 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-11-06 22:33:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 255 proven. 517 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-06 22:33:29,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:29,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:29,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782333513] [2023-11-06 22:33:29,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:33:29,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203417324] [2023-11-06 22:33:29,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203417324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:29,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:29,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-06 22:33:29,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468748694] [2023-11-06 22:33:29,179 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:29,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:33:29,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:29,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:33:29,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=214, Unknown=2, NotChecked=0, Total=272 [2023-11-06 22:33:29,180 INFO L87 Difference]: Start difference. First operand 952 states and 1093 transitions. Second operand has 13 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-06 22:33:30,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:30,344 INFO L93 Difference]: Finished difference Result 1710 states and 1959 transitions. [2023-11-06 22:33:30,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:33:30,344 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 196 [2023-11-06 22:33:30,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:30,346 INFO L225 Difference]: With dead ends: 1710 [2023-11-06 22:33:30,346 INFO L226 Difference]: Without dead ends: 806 [2023-11-06 22:33:30,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=457, Unknown=2, NotChecked=0, Total=600 [2023-11-06 22:33:30,357 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 198 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:30,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 409 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:33:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2023-11-06 22:33:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 764. [2023-11-06 22:33:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 663 states have (on average 1.1236802413273002) internal successors, (745), 668 states have internal predecessors, (745), 66 states have call successors, (66), 34 states have call predecessors, (66), 34 states have return successors, (66), 61 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-06 22:33:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 877 transitions. [2023-11-06 22:33:30,571 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 877 transitions. Word has length 196 [2023-11-06 22:33:30,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:30,572 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 877 transitions. [2023-11-06 22:33:30,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-06 22:33:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 877 transitions. [2023-11-06 22:33:30,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-06 22:33:30,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:30,574 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:30,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:30,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-06 22:33:30,782 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:30,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1970461051, now seen corresponding path program 1 times [2023-11-06 22:33:30,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:30,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968043986] [2023-11-06 22:33:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:30,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:30,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:33:30,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373829410] [2023-11-06 22:33:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:30,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:30,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:30,818 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:30,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-06 22:33:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:31,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:33:31,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:32,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 22:33:32,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:32,496 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:33:32,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:32,541 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:33:32,683 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 22:33:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:33:32,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:32,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:32,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968043986] [2023-11-06 22:33:32,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:33:32,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373829410] [2023-11-06 22:33:32,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373829410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:32,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:32,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:33:32,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812516794] [2023-11-06 22:33:32,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:32,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:33:32,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:32,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:33:32,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:33:32,696 INFO L87 Difference]: Start difference. First operand 764 states and 877 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:33:33,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:33,552 INFO L93 Difference]: Finished difference Result 2137 states and 2457 transitions. [2023-11-06 22:33:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:33:33,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 197 [2023-11-06 22:33:33,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:33,556 INFO L225 Difference]: With dead ends: 2137 [2023-11-06 22:33:33,557 INFO L226 Difference]: Without dead ends: 1421 [2023-11-06 22:33:33,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:33:33,559 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 384 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:33,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 299 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:33:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2023-11-06 22:33:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1278. [2023-11-06 22:33:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1125 states have (on average 1.1235555555555556) internal successors, (1264), 1134 states have internal predecessors, (1264), 100 states have call successors, (100), 52 states have call predecessors, (100), 52 states have return successors, (100), 91 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-06 22:33:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1464 transitions. [2023-11-06 22:33:33,927 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1464 transitions. Word has length 197 [2023-11-06 22:33:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:33,927 INFO L495 AbstractCegarLoop]: Abstraction has 1278 states and 1464 transitions. [2023-11-06 22:33:33,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:33:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1464 transitions. [2023-11-06 22:33:33,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-06 22:33:33,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:33,930 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:33,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:34,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-06 22:33:34,137 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:34,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1290402681, now seen corresponding path program 1 times [2023-11-06 22:33:34,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:34,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134296734] [2023-11-06 22:33:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:34,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:34,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:33:34,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745961928] [2023-11-06 22:33:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:34,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:34,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:34,177 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:34,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-06 22:33:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:34,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-06 22:33:34,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:35,994 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:33:36,158 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:33:36,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:33:36,560 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:33:36,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:33:36,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:33:36,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 49 [2023-11-06 22:33:36,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:36,834 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 51 [2023-11-06 22:33:36,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:36,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 51 [2023-11-06 22:33:37,498 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 40 [2023-11-06 22:33:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-11-06 22:33:37,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:38,060 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_~#signed_char_Array_0~0.offset| 1)) (.cse3 (+ 2 |c_~#signed_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_3435 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse0 (select .cse2 .cse4)) (.cse1 (mod (+ 192 (select .cse2 .cse3)) 256))) (or (= (+ .cse0 256) .cse1) (= .cse0 .cse1))))) (forall ((v_ArrVal_3435 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse6 (mod (+ 192 (select .cse5 .cse3)) 256))) (or (= (select .cse5 .cse4) .cse6) (< 127 .cse6))))) (forall ((v_ArrVal_3435 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse8 (mod (+ 192 (select .cse7 .cse3)) 256))) (or (= (+ (select .cse7 .cse4) 256) .cse8) (< .cse8 128))))))) is different from false [2023-11-06 22:33:38,163 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_~#signed_char_Array_0~0.offset| 1)) (.cse3 (+ 2 |c_~#signed_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse0 (mod (+ 192 (select .cse1 .cse3)) 256))) (or (< .cse0 128) (= (+ 256 (select .cse1 .cse2)) .cse0))))) (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse6 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse4 (select .cse6 .cse2)) (.cse5 (mod (+ 192 (select .cse6 .cse3)) 256))) (or (= .cse4 .cse5) (= (+ 256 .cse4) .cse5))))) (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse8 (mod (+ 192 (select .cse7 .cse3)) 256))) (or (= (select .cse7 .cse2) .cse8) (< 127 .cse8))))))) is different from false [2023-11-06 22:33:38,316 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 2 |c_~#signed_char_Array_0~0.offset|)) (.cse10 (select |c_#memory_int| |c_~#signed_char_Array_0~0.base|)) (.cse3 (+ |c_~#signed_char_Array_0~0.offset| 1)) (.cse11 (mod (+ |c_ULTIMATE.start_step_#t~ite26#1| 192) 256))) (and (or (let ((.cse5 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| (store .cse10 .cse3 (+ (- 256) .cse11))))) (and (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse2 (select (store (store .cse5 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse0 (mod (+ (select .cse2 .cse4) 192) 256)) (.cse1 (select .cse2 .cse3))) (or (= .cse0 .cse1) (= .cse0 (+ 256 .cse1)))))) (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse7 (select (store (store .cse5 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse6 (mod (+ (select .cse7 .cse4) 192) 256))) (or (= .cse6 (select .cse7 .cse3)) (< 127 .cse6))))) (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse9 (select (store (store .cse5 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse8 (mod (+ (select .cse9 .cse4) 192) 256))) (or (= .cse8 (+ 256 (select .cse9 .cse3))) (< .cse8 128))))))) (< .cse11 128)) (or (let ((.cse15 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| (store .cse10 .cse3 .cse11)))) (and (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse14 (select (store (store .cse15 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse13 (mod (+ 192 (select .cse14 .cse4)) 256)) (.cse12 (select .cse14 .cse3))) (or (= .cse12 .cse13) (= .cse13 (+ .cse12 256)))))) (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse16 (select (store (store .cse15 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse17 (mod (+ 192 (select .cse16 .cse4)) 256))) (or (= (select .cse16 .cse3) .cse17) (< 127 .cse17))))) (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse19 (select (store (store .cse15 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse18 (mod (+ 192 (select .cse19 .cse4)) 256))) (or (= .cse18 (+ (select .cse19 .cse3) 256)) (< .cse18 128))))))) (< 127 .cse11)))) is different from false [2023-11-06 22:33:38,527 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (select |c_#memory_int| |c_~#signed_char_Array_0~0.base|)) (.cse4 (+ 2 |c_~#signed_char_Array_0~0.offset|))) (let ((.cse3 (+ |c_~#signed_char_Array_0~0.offset| 1)) (.cse11 (mod (+ 192 (select .cse10 .cse4)) 256))) (and (or (let ((.cse5 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| (store .cse10 .cse3 (+ (- 256) .cse11))))) (and (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse2 (select (store (store .cse5 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse0 (mod (+ 192 (select .cse2 .cse4)) 256)) (.cse1 (select .cse2 .cse3))) (or (= .cse0 (+ 256 .cse1)) (= .cse0 .cse1))))) (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse7 (select (store (store .cse5 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse6 (mod (+ 192 (select .cse7 .cse4)) 256))) (or (< .cse6 128) (= .cse6 (+ 256 (select .cse7 .cse3))))))) (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse9 (select (store (store .cse5 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse8 (mod (+ 192 (select .cse9 .cse4)) 256))) (or (= .cse8 (select .cse9 .cse3)) (< 127 .cse8))))))) (< .cse11 128)) (or (let ((.cse15 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| (store .cse10 .cse3 .cse11)))) (and (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse14 (select (store (store .cse15 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse12 (mod (+ 192 (select .cse14 .cse4)) 256)) (.cse13 (select .cse14 .cse3))) (or (= .cse12 .cse13) (= .cse12 (+ 256 .cse13)))))) (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse17 (select (store (store .cse15 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse16 (mod (+ 192 (select .cse17 .cse4)) 256))) (or (< .cse16 128) (= .cse16 (+ 256 (select .cse17 .cse3))))))) (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse19 (select (store (store .cse15 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse18 (mod (+ 192 (select .cse19 .cse4)) 256))) (or (= .cse18 (select .cse19 .cse3)) (< 127 .cse18))))))) (< 127 .cse11))))) is different from false [2023-11-06 22:33:51,765 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_~#signed_char_Array_0~0.offset| 1)) (.cse3 (+ 2 |c_~#signed_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_3431 (Array Int Int)) (v_ArrVal_3429 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_3429))) (let ((.cse5 (select (store .cse4 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3431) |c_~#signed_char_Array_0~0.base|))) (let ((.cse6 (mod (+ 192 (select .cse5 .cse3)) 256))) (or (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse1 (select (store (store (store .cse4 |c_~#signed_char_Array_0~0.base| (store .cse5 .cse2 (+ (- 256) .cse6))) |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse0 (mod (+ (select .cse1 .cse3) 192) 256))) (or (< .cse0 128) (= .cse0 (+ 256 (select .cse1 .cse2))))))) (< .cse6 128)))))) (forall ((v_ArrVal_3431 (Array Int Int)) (v_ArrVal_3429 (Array Int Int))) (let ((.cse9 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_3429))) (let ((.cse10 (select (store .cse9 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3431) |c_~#signed_char_Array_0~0.base|))) (let ((.cse11 (mod (+ 192 (select .cse10 .cse3)) 256))) (or (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse7 (select (store (store (store .cse9 |c_~#signed_char_Array_0~0.base| (store .cse10 .cse2 .cse11)) |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse8 (mod (+ (select .cse7 .cse3) 192) 256))) (or (= (+ (select .cse7 .cse2) 256) .cse8) (< .cse8 128))))) (< 127 .cse11)))))) (forall ((v_ArrVal_3431 (Array Int Int)) (v_ArrVal_3429 (Array Int Int))) (let ((.cse14 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_3429))) (let ((.cse15 (select (store .cse14 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3431) |c_~#signed_char_Array_0~0.base|))) (let ((.cse16 (mod (+ 192 (select .cse15 .cse3)) 256))) (or (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse13 (select (store (store (store .cse14 |c_~#signed_char_Array_0~0.base| (store .cse15 .cse2 (+ (- 256) .cse16))) |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse12 (mod (+ (select .cse13 .cse3) 192) 256))) (or (= .cse12 (select .cse13 .cse2)) (< 127 .cse12))))) (< .cse16 128)))))) (forall ((v_ArrVal_3431 (Array Int Int)) (v_ArrVal_3429 (Array Int Int))) (let ((.cse20 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_3429))) (let ((.cse21 (select (store .cse20 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3431) |c_~#signed_char_Array_0~0.base|))) (let ((.cse22 (mod (+ 192 (select .cse21 .cse3)) 256))) (or (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse19 (select (store (store (store .cse20 |c_~#signed_char_Array_0~0.base| (store .cse21 .cse2 (+ (- 256) .cse22))) |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse17 (mod (+ (select .cse19 .cse3) 192) 256)) (.cse18 (select .cse19 .cse2))) (or (= .cse17 .cse18) (= .cse17 (+ 256 .cse18)))))) (< .cse22 128)))))) (forall ((v_ArrVal_3431 (Array Int Int)) (v_ArrVal_3429 (Array Int Int))) (let ((.cse25 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_3429))) (let ((.cse26 (select (store .cse25 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3431) |c_~#signed_char_Array_0~0.base|))) (let ((.cse27 (mod (+ 192 (select .cse26 .cse3)) 256))) (or (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse23 (select (store (store (store .cse25 |c_~#signed_char_Array_0~0.base| (store .cse26 .cse2 .cse27)) |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse24 (mod (+ (select .cse23 .cse3) 192) 256))) (or (= (select .cse23 .cse2) .cse24) (< 127 .cse24))))) (< 127 .cse27)))))) (forall ((v_ArrVal_3431 (Array Int Int)) (v_ArrVal_3429 (Array Int Int))) (let ((.cse32 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_3429))) (let ((.cse33 (select (store .cse32 |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3431) |c_~#signed_char_Array_0~0.base|))) (let ((.cse28 (mod (+ 192 (select .cse33 .cse3)) 256))) (or (< 127 .cse28) (forall ((v_ArrVal_3434 (Array Int Int)) (v_ArrVal_3435 (Array Int Int))) (let ((.cse31 (select (store (store (store .cse32 |c_~#signed_char_Array_0~0.base| (store .cse33 .cse2 .cse28)) |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_3434) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_3435) |c_~#signed_char_Array_0~0.base|))) (let ((.cse29 (select .cse31 .cse2)) (.cse30 (mod (+ (select .cse31 .cse3) 192) 256))) (or (= (+ .cse29 256) .cse30) (= .cse29 .cse30)))))))))))) is different from false [2023-11-06 22:33:52,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:52,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134296734] [2023-11-06 22:33:52,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:33:52,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745961928] [2023-11-06 22:33:52,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745961928] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:52,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:52,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-06 22:33:52,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421023534] [2023-11-06 22:33:52,570 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:33:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:33:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=315, Unknown=10, NotChecked=200, Total=600 [2023-11-06 22:33:52,571 INFO L87 Difference]: Start difference. First operand 1278 states and 1464 transitions. Second operand has 16 states, 16 states have (on average 5.6875) internal successors, (91), 15 states have internal predecessors, (91), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:33:56,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:56,178 INFO L93 Difference]: Finished difference Result 2595 states and 2960 transitions. [2023-11-06 22:33:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:33:56,178 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 15 states have internal predecessors, (91), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 197 [2023-11-06 22:33:56,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:56,182 INFO L225 Difference]: With dead ends: 2595 [2023-11-06 22:33:56,182 INFO L226 Difference]: Without dead ends: 1365 [2023-11-06 22:33:56,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=246, Invalid=820, Unknown=10, NotChecked=330, Total=1406 [2023-11-06 22:33:56,185 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 531 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:56,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 655 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:33:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2023-11-06 22:33:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1189. [2023-11-06 22:33:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1056 states have (on average 1.1240530303030303) internal successors, (1187), 1064 states have internal predecessors, (1187), 88 states have call successors, (88), 44 states have call predecessors, (88), 44 states have return successors, (88), 80 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-06 22:33:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1363 transitions. [2023-11-06 22:33:56,532 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1363 transitions. Word has length 197 [2023-11-06 22:33:56,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:56,532 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1363 transitions. [2023-11-06 22:33:56,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 15 states have internal predecessors, (91), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:33:56,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1363 transitions. [2023-11-06 22:33:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-06 22:33:56,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:56,535 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:56,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:56,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-06 22:33:56,743 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:56,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:56,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1900859523, now seen corresponding path program 1 times [2023-11-06 22:33:56,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:56,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602502929] [2023-11-06 22:33:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:56,783 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:33:56,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694438021] [2023-11-06 22:33:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:56,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:56,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:56,785 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:56,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-06 22:33:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:57,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 22:33:57,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:58,812 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:33:58,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:58,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:58,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:58,920 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-06 22:33:59,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:59,473 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:59,473 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-11-06 22:33:59,478 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 153 [2023-11-06 22:33:59,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-11-06 22:33:59,534 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-11-06 22:33:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:33:59,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:59,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602502929] [2023-11-06 22:33:59,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:33:59,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694438021] [2023-11-06 22:33:59,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694438021] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:59,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:59,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 21 [2023-11-06 22:33:59,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415775147] [2023-11-06 22:33:59,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:59,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:33:59,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:59,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:33:59,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=346, Unknown=10, NotChecked=0, Total=420 [2023-11-06 22:33:59,995 INFO L87 Difference]: Start difference. First operand 1189 states and 1363 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:03,600 INFO L93 Difference]: Finished difference Result 2371 states and 2724 transitions. [2023-11-06 22:34:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:34:03,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 197 [2023-11-06 22:34:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:03,603 INFO L225 Difference]: With dead ends: 2371 [2023-11-06 22:34:03,603 INFO L226 Difference]: Without dead ends: 1236 [2023-11-06 22:34:03,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=169, Invalid=751, Unknown=10, NotChecked=0, Total=930 [2023-11-06 22:34:03,605 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 387 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:03,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1103 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 22:34:03,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2023-11-06 22:34:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1213. [2023-11-06 22:34:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1077 states have (on average 1.1216341689879294) internal successors, (1208), 1085 states have internal predecessors, (1208), 90 states have call successors, (90), 45 states have call predecessors, (90), 45 states have return successors, (90), 82 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-06 22:34:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1388 transitions. [2023-11-06 22:34:03,845 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1388 transitions. Word has length 197 [2023-11-06 22:34:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:03,846 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1388 transitions. [2023-11-06 22:34:03,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1388 transitions. [2023-11-06 22:34:03,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-06 22:34:03,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:03,859 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:03,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-06 22:34:04,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-06 22:34:04,060 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:04,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:04,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1714049403, now seen corresponding path program 1 times [2023-11-06 22:34:04,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:04,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522156589] [2023-11-06 22:34:04,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:04,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:04,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:34:04,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236137259] [2023-11-06 22:34:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:04,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:04,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:04,088 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:04,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-06 22:34:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:04,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:34:04,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:06,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 22:34:06,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:06,435 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:34:06,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:06,500 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:34:06,694 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 22:34:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:34:06,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:06,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:06,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522156589] [2023-11-06 22:34:06,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:34:06,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236137259] [2023-11-06 22:34:06,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236137259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:06,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:06,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:34:06,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564732789] [2023-11-06 22:34:06,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:06,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:34:06,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:06,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:34:06,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:34:06,710 INFO L87 Difference]: Start difference. First operand 1213 states and 1388 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:07,924 INFO L93 Difference]: Finished difference Result 2362 states and 2699 transitions. [2023-11-06 22:34:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:34:07,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 197 [2023-11-06 22:34:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:07,927 INFO L225 Difference]: With dead ends: 2362 [2023-11-06 22:34:07,927 INFO L226 Difference]: Without dead ends: 1203 [2023-11-06 22:34:07,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:34:07,929 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 299 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:07,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 453 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:34:07,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-11-06 22:34:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1001. [2023-11-06 22:34:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 919 states have (on average 1.1207834602829163) internal successors, (1030), 923 states have internal predecessors, (1030), 54 states have call successors, (54), 27 states have call predecessors, (54), 27 states have return successors, (54), 50 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-06 22:34:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1138 transitions. [2023-11-06 22:34:08,066 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1138 transitions. Word has length 197 [2023-11-06 22:34:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:08,067 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 1138 transitions. [2023-11-06 22:34:08,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1138 transitions. [2023-11-06 22:34:08,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-06 22:34:08,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:08,069 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:08,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-06 22:34:08,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-06 22:34:08,269 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:08,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:08,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1633778251, now seen corresponding path program 1 times [2023-11-06 22:34:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:08,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993633651] [2023-11-06 22:34:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:08,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:08,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:34:08,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982787929] [2023-11-06 22:34:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:08,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:08,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:08,296 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:08,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-06 22:34:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:08,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-06 22:34:08,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:09,491 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:34:09,745 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:34:09,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:34:10,219 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:34:10,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:34:10,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:34:10,933 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:34:11,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:11,178 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:34:11,376 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:34:11,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:11,678 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-11-06 22:34:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 126 proven. 574 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 22:34:11,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:11,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:11,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993633651] [2023-11-06 22:34:11,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:34:11,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982787929] [2023-11-06 22:34:11,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982787929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:11,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:34:11,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-06 22:34:11,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64485793] [2023-11-06 22:34:11,777 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:11,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:34:11,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:11,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:34:11,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=77, Unknown=4, NotChecked=0, Total=110 [2023-11-06 22:34:11,779 INFO L87 Difference]: Start difference. First operand 1001 states and 1138 transitions. Second operand has 10 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-06 22:34:13,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:13,157 INFO L93 Difference]: Finished difference Result 1785 states and 2026 transitions. [2023-11-06 22:34:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:34:13,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 199 [2023-11-06 22:34:13,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:13,160 INFO L225 Difference]: With dead ends: 1785 [2023-11-06 22:34:13,160 INFO L226 Difference]: Without dead ends: 838 [2023-11-06 22:34:13,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=190, Unknown=4, NotChecked=0, Total=272 [2023-11-06 22:34:13,161 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 108 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:13,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 351 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:34:13,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2023-11-06 22:34:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 806. [2023-11-06 22:34:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 729 states have (on average 1.1179698216735254) internal successors, (815), 732 states have internal predecessors, (815), 50 states have call successors, (50), 26 states have call predecessors, (50), 26 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-06 22:34:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 915 transitions. [2023-11-06 22:34:13,281 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 915 transitions. Word has length 199 [2023-11-06 22:34:13,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:13,282 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 915 transitions. [2023-11-06 22:34:13,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-06 22:34:13,282 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 915 transitions. [2023-11-06 22:34:13,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-06 22:34:13,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:13,285 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:13,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:13,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:13,492 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:13,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:13,493 INFO L85 PathProgramCache]: Analyzing trace with hash -749012613, now seen corresponding path program 1 times [2023-11-06 22:34:13,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:13,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075090457] [2023-11-06 22:34:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:13,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:13,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:34:13,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110400797] [2023-11-06 22:34:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:13,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:13,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:13,532 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:13,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-06 22:34:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:14,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 22:34:14,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:14,400 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:34:14,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 31 [2023-11-06 22:34:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-06 22:34:14,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:34:15,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:15,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075090457] [2023-11-06 22:34:15,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:34:15,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110400797] [2023-11-06 22:34:15,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110400797] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:15,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:34:15,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 19 [2023-11-06 22:34:15,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083462804] [2023-11-06 22:34:15,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:15,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:34:15,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:15,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:34:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:34:15,013 INFO L87 Difference]: Start difference. First operand 806 states and 915 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:16,579 INFO L93 Difference]: Finished difference Result 1501 states and 1785 transitions. [2023-11-06 22:34:16,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:34:16,580 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 202 [2023-11-06 22:34:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:16,587 INFO L225 Difference]: With dead ends: 1501 [2023-11-06 22:34:16,588 INFO L226 Difference]: Without dead ends: 1499 [2023-11-06 22:34:16,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:34:16,592 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 196 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:16,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1474 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:34:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2023-11-06 22:34:16,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 989. [2023-11-06 22:34:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 912 states have (on average 1.1041666666666667) internal successors, (1007), 915 states have internal predecessors, (1007), 50 states have call successors, (50), 26 states have call predecessors, (50), 26 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-06 22:34:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1107 transitions. [2023-11-06 22:34:16,752 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1107 transitions. Word has length 202 [2023-11-06 22:34:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:16,753 INFO L495 AbstractCegarLoop]: Abstraction has 989 states and 1107 transitions. [2023-11-06 22:34:16,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1107 transitions. [2023-11-06 22:34:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-06 22:34:16,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:16,755 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:16,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-06 22:34:16,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:16,955 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:16,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash -266071741, now seen corresponding path program 1 times [2023-11-06 22:34:16,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:16,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462842153] [2023-11-06 22:34:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:16,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:16,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:34:16,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776061644] [2023-11-06 22:34:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:16,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:16,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:16,993 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:17,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-06 22:34:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:17,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:34:17,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:18,708 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-06 22:34:18,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:18,773 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2023-11-06 22:34:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:34:18,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:18,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462842153] [2023-11-06 22:34:18,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:34:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776061644] [2023-11-06 22:34:18,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776061644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:18,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:18,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:34:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866725742] [2023-11-06 22:34:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:18,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:34:18,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:34:18,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:34:18,991 INFO L87 Difference]: Start difference. First operand 989 states and 1107 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:19,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:19,882 INFO L93 Difference]: Finished difference Result 2442 states and 2718 transitions. [2023-11-06 22:34:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:34:19,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 203 [2023-11-06 22:34:19,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:19,885 INFO L225 Difference]: With dead ends: 2442 [2023-11-06 22:34:19,885 INFO L226 Difference]: Without dead ends: 1321 [2023-11-06 22:34:19,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:34:19,887 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 245 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:19,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 274 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:34:19,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2023-11-06 22:34:20,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 965. [2023-11-06 22:34:20,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 888 states have (on average 1.0934684684684686) internal successors, (971), 891 states have internal predecessors, (971), 50 states have call successors, (50), 26 states have call predecessors, (50), 26 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-06 22:34:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1071 transitions. [2023-11-06 22:34:20,055 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1071 transitions. Word has length 203 [2023-11-06 22:34:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:20,055 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1071 transitions. [2023-11-06 22:34:20,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:20,056 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1071 transitions. [2023-11-06 22:34:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-06 22:34:20,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:20,058 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:20,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-06 22:34:20,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:20,265 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:20,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:20,265 INFO L85 PathProgramCache]: Analyzing trace with hash -737242115, now seen corresponding path program 1 times [2023-11-06 22:34:20,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:20,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715734094] [2023-11-06 22:34:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:20,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:20,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:34:20,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798354416] [2023-11-06 22:34:20,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:20,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:20,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:20,296 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:20,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-06 22:34:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:20,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 22:34:20,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:21,527 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:34:21,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:34:22,011 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:34:22,289 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:34:22,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:22,571 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:34:22,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:22,855 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:34:23,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:23,098 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:34:23,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:23,306 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:34:23,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:23,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:34:23,678 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-11-06 22:34:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 225 proven. 526 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-06 22:34:23,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:23,735 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3873 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_3873) |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 2 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) 256) 0)) is different from false [2023-11-06 22:34:23,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:23,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715734094] [2023-11-06 22:34:23,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:34:23,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798354416] [2023-11-06 22:34:23,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798354416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:23,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:34:23,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-06 22:34:23,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563874578] [2023-11-06 22:34:23,760 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:23,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:34:23,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:23,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:34:23,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=98, Unknown=1, NotChecked=20, Total=156 [2023-11-06 22:34:23,761 INFO L87 Difference]: Start difference. First operand 965 states and 1071 transitions. Second operand has 11 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-06 22:34:25,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:25,244 INFO L93 Difference]: Finished difference Result 1634 states and 1809 transitions. [2023-11-06 22:34:25,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:34:25,245 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 204 [2023-11-06 22:34:25,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:25,247 INFO L225 Difference]: With dead ends: 1634 [2023-11-06 22:34:25,247 INFO L226 Difference]: Without dead ends: 723 [2023-11-06 22:34:25,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=218, Unknown=1, NotChecked=32, Total=342 [2023-11-06 22:34:25,249 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 175 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:25,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 340 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:34:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-11-06 22:34:25,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 597. [2023-11-06 22:34:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 540 states have (on average 1.0944444444444446) internal successors, (591), 541 states have internal predecessors, (591), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-06 22:34:25,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 663 transitions. [2023-11-06 22:34:25,380 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 663 transitions. Word has length 204 [2023-11-06 22:34:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:25,381 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 663 transitions. [2023-11-06 22:34:25,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-06 22:34:25,381 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 663 transitions. [2023-11-06 22:34:25,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-06 22:34:25,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:25,383 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:25,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:25,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:25,591 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:25,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash -556018755, now seen corresponding path program 1 times [2023-11-06 22:34:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:25,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647624624] [2023-11-06 22:34:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:25,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:25,624 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:34:25,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185553263] [2023-11-06 22:34:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:25,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:25,625 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:25,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-06 22:34:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:26,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:34:26,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:27,748 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-11-06 22:34:27,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:34:27,848 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-11-06 22:34:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:34:28,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:34:28,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:28,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647624624] [2023-11-06 22:34:28,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:34:28,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185553263] [2023-11-06 22:34:28,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185553263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:28,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:28,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:34:28,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69952229] [2023-11-06 22:34:28,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:28,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:34:28,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:28,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:34:28,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:34:28,028 INFO L87 Difference]: Start difference. First operand 597 states and 663 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:28,942 INFO L93 Difference]: Finished difference Result 1101 states and 1225 transitions. [2023-11-06 22:34:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:34:28,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 204 [2023-11-06 22:34:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:28,943 INFO L225 Difference]: With dead ends: 1101 [2023-11-06 22:34:28,943 INFO L226 Difference]: Without dead ends: 414 [2023-11-06 22:34:28,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:34:28,944 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 71 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:28,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 355 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:34:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-11-06 22:34:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2023-11-06 22:34:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 357 states have (on average 1.084033613445378) internal successors, (387), 358 states have internal predecessors, (387), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-06 22:34:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 459 transitions. [2023-11-06 22:34:29,027 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 459 transitions. Word has length 204 [2023-11-06 22:34:29,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:29,027 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 459 transitions. [2023-11-06 22:34:29,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 459 transitions. [2023-11-06 22:34:29,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-06 22:34:29,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:29,028 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:29,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-11-06 22:34:29,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-11-06 22:34:29,229 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:29,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:29,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2122884096, now seen corresponding path program 1 times [2023-11-06 22:34:29,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:29,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790423427] [2023-11-06 22:34:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:29,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:29,255 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:34:29,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529152064] [2023-11-06 22:34:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:29,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:29,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:29,257 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:29,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c10aba-90b9-44fc-9920-a9f50b75aa58/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-06 22:34:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:29,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-06 22:34:29,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:30,175 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13