./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-89.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/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_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-89.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/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_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/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 b28c8175bc39dd1c459be6d9349fe3be895f115cd8cddc9719a89a6e0edbf727 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:14:36,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:14:36,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:14:36,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:14:36,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:14:36,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:14:36,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:14:36,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:14:36,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:14:36,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:14:36,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:14:36,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:14:36,753 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:14:36,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:14:36,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:14:36,756 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:14:36,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:14:36,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:14:36,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:14:36,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:14:36,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:14:36,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:14:36,758 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:14:36,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:14:36,759 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:14:36,759 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:14:36,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:14:36,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:14:36,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:36,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:14:36,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:14:36,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:14:36,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:14:36,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:14:36,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:14:36,763 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:14:36,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:14:36,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:14:36,765 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:14:36,766 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_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b28c8175bc39dd1c459be6d9349fe3be895f115cd8cddc9719a89a6e0edbf727 [2023-11-06 21:14:37,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:14:37,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:14:37,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:14:37,072 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:14:37,075 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:14:37,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-89.i [2023-11-06 21:14:40,283 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:40,533 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:40,534 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-89.i [2023-11-06 21:14:40,544 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/data/55e63305e/b9b95cb014f748f48159625e63079979/FLAG0ffc710a7 [2023-11-06 21:14:40,560 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/data/55e63305e/b9b95cb014f748f48159625e63079979 [2023-11-06 21:14:40,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:40,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:40,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:40,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:40,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:40,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:40,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af1a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40, skipping insertion in model container [2023-11-06 21:14:40,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:40,622 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:40,776 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_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-89.i[916,929] [2023-11-06 21:14:40,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:40,851 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:40,862 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_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-89.i[916,929] [2023-11-06 21:14:40,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:40,918 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:40,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40 WrapperNode [2023-11-06 21:14:40,919 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:40,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:40,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:40,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:40,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:40,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:40,990 INFO L138 Inliner]: procedures = 26, calls = 143, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 417 [2023-11-06 21:14:40,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:40,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:40,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:40,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:41,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:41,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:41,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:41,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:41,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:41,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:41,051 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:41,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:41,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:41,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:41,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:41,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:41,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (1/1) ... [2023-11-06 21:14:41,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:41,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:41,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:41,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:14:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:14:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:14:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:14:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:41,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:41,301 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:41,303 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:42,005 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:42,015 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:42,016 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:14:42,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:42 BoogieIcfgContainer [2023-11-06 21:14:42,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:42,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:14:42,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:14:42,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:14:42,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:40" (1/3) ... [2023-11-06 21:14:42,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb34049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:42, skipping insertion in model container [2023-11-06 21:14:42,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:40" (2/3) ... [2023-11-06 21:14:42,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb34049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:42, skipping insertion in model container [2023-11-06 21:14:42,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:42" (3/3) ... [2023-11-06 21:14:42,035 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-89.i [2023-11-06 21:14:42,057 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:14:42,058 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:14:42,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:14:42,150 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;@a8388b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:14:42,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:14:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 85 states have internal predecessors, (122), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:14:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:14:42,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:42,183 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:42,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:42,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:42,189 INFO L85 PathProgramCache]: Analyzing trace with hash 983671971, now seen corresponding path program 1 times [2023-11-06 21:14:42,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:42,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922105207] [2023-11-06 21:14:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:42,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:42,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:42,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922105207] [2023-11-06 21:14:42,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 21:14:42,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803106033] [2023-11-06 21:14:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:42,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:42,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:42,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:42,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:14:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:42,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 21:14:42,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-06 21:14:42,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:42,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803106033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:42,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:42,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:14:42,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250493385] [2023-11-06 21:14:42,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:42,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:14:42,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:42,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:14:42,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:14:42,989 INFO L87 Difference]: Start difference. First operand has 100 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 85 states have internal predecessors, (122), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 21:14:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:43,022 INFO L93 Difference]: Finished difference Result 193 states and 303 transitions. [2023-11-06 21:14:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:14:43,025 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2023-11-06 21:14:43,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:43,033 INFO L225 Difference]: With dead ends: 193 [2023-11-06 21:14:43,033 INFO L226 Difference]: Without dead ends: 96 [2023-11-06 21:14:43,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 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 21:14:43,041 INFO L413 NwaCegarLoop]: 139 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, 139 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 21:14:43,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:14:43,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-06 21:14:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-11-06 21:14:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 81 states have (on average 1.3950617283950617) internal successors, (113), 81 states have internal predecessors, (113), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:14:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 139 transitions. [2023-11-06 21:14:43,095 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 139 transitions. Word has length 109 [2023-11-06 21:14:43,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:43,096 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 139 transitions. [2023-11-06 21:14:43,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 21:14:43,096 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 139 transitions. [2023-11-06 21:14:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:14:43,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:43,100 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:43,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:43,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:43,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:43,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:43,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1135548361, now seen corresponding path program 1 times [2023-11-06 21:14:43,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:43,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072335145] [2023-11-06 21:14:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:43,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:43,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:43,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602237785] [2023-11-06 21:14:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:43,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:43,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:43,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:43,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:14:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:43,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:14:43,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:43,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:43,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:43,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072335145] [2023-11-06 21:14:43,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602237785] [2023-11-06 21:14:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602237785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:43,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:43,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:14:43,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396315349] [2023-11-06 21:14:43,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:43,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:14:43,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:43,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:14:43,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:14:43,703 INFO L87 Difference]: Start difference. First operand 96 states and 139 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:43,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:43,757 INFO L93 Difference]: Finished difference Result 201 states and 292 transitions. [2023-11-06 21:14:43,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:14:43,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:14:43,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:43,761 INFO L225 Difference]: With dead ends: 201 [2023-11-06 21:14:43,762 INFO L226 Difference]: Without dead ends: 108 [2023-11-06 21:14:43,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:14:43,764 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 21 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 404 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 21:14:43,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 404 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:14:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-06 21:14:43,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 98. [2023-11-06 21:14:43,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 83 states have (on average 1.3855421686746987) internal successors, (115), 83 states have internal predecessors, (115), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:14:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 141 transitions. [2023-11-06 21:14:43,783 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 141 transitions. Word has length 109 [2023-11-06 21:14:43,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:43,785 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 141 transitions. [2023-11-06 21:14:43,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 141 transitions. [2023-11-06 21:14:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:14:43,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:43,789 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:43,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 21:14:43,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 21:14:43,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:43,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:43,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1815606731, now seen corresponding path program 1 times [2023-11-06 21:14:43,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:43,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222289645] [2023-11-06 21:14:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:43,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:44,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:44,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604632905] [2023-11-06 21:14:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:44,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:44,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:44,048 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:44,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:14:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:44,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:14:44,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:44,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:44,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:44,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222289645] [2023-11-06 21:14:44,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:44,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604632905] [2023-11-06 21:14:44,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604632905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:44,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:44,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:14:44,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360256388] [2023-11-06 21:14:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:44,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:14:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:14:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:14:44,297 INFO L87 Difference]: Start difference. First operand 98 states and 141 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:44,372 INFO L93 Difference]: Finished difference Result 201 states and 290 transitions. [2023-11-06 21:14:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:14:44,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:14:44,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:44,376 INFO L225 Difference]: With dead ends: 201 [2023-11-06 21:14:44,380 INFO L226 Difference]: Without dead ends: 106 [2023-11-06 21:14:44,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:14:44,383 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 12 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:44,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 402 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:14:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-06 21:14:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2023-11-06 21:14:44,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 85 states have (on average 1.3764705882352941) internal successors, (117), 85 states have internal predecessors, (117), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:14:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 143 transitions. [2023-11-06 21:14:44,412 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 143 transitions. Word has length 109 [2023-11-06 21:14:44,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:44,415 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 143 transitions. [2023-11-06 21:14:44,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 143 transitions. [2023-11-06 21:14:44,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:14:44,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:44,422 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:44,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:44,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 21:14:44,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:44,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:44,636 INFO L85 PathProgramCache]: Analyzing trace with hash -704353203, now seen corresponding path program 1 times [2023-11-06 21:14:44,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:44,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881698490] [2023-11-06 21:14:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:44,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:44,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:44,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563046205] [2023-11-06 21:14:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:44,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:44,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:44,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:44,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:14:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:44,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 21:14:44,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:46,845 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 21:14:47,185 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 21:14:47,418 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 21:14:47,647 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 21:14:47,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:47,814 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 60 treesize of output 49 [2023-11-06 21:14:47,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2023-11-06 21:14:47,885 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2023-11-06 21:14:47,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:47,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:47,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:47,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:47,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:47,982 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2023-11-06 21:14:48,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:48,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:48,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:48,025 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 45 treesize of output 39 [2023-11-06 21:14:48,310 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:14:48,311 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 74 treesize of output 86 [2023-11-06 21:14:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-06 21:14:48,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:14:48,738 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_168 (Array Int Int)) (v_ArrVal_167 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_167) c_~var_1_15_Pointer~0.base v_ArrVal_168))) (or (= (mod (select (select .cse0 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse0 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))) (forall ((v_ArrVal_168 (Array Int Int)) (v_ArrVal_167 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_167) c_~var_1_15_Pointer~0.base v_ArrVal_168))) (or (= (mod (select (select .cse1 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset) 256) 1) (= (mod (select (select .cse1 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))) is different from false [2023-11-06 21:14:48,832 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| c_~var_1_1_Pointer~0.base))) (and (or (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_168 (Array Int Int)) (v_ArrVal_167 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse1 ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_167) c_~var_1_15_Pointer~0.base v_ArrVal_168))) (or (= (mod (select (select .cse0 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= (mod (select (select .cse0 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1)))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_168 (Array Int Int)) (v_ArrVal_167 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse1 ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_167) c_~var_1_15_Pointer~0.base v_ArrVal_168))) (or (not (= (mod (select (select .cse2 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)) (= (mod (select (select .cse2 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0))))) |c_ULTIMATE.start_step_#t~short18#1|) (or (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_168 (Array Int Int)) (v_ArrVal_167 (Array Int Int))) (let ((.cse3 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse1 ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_167) c_~var_1_15_Pointer~0.base v_ArrVal_168))) (or (= (mod (select (select .cse3 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= (mod (select (select .cse3 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1)))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_168 (Array Int Int)) (v_ArrVal_167 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse1 ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_167) c_~var_1_15_Pointer~0.base v_ArrVal_168))) (or (= (mod (select (select .cse4 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse4 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)))))) (not |c_ULTIMATE.start_step_#t~short18#1|)))) is different from false [2023-11-06 21:14:49,361 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_165 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_165))) (or (= (mod (select (select .cse0 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_168 (Array Int Int)) (v_ArrVal_167 (Array Int Int))) (let ((.cse1 (store (store (store .cse0 c_~var_1_1_Pointer~0.base (store (select .cse0 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_167) c_~var_1_15_Pointer~0.base v_ArrVal_168))) (or (not (= (mod (select (select .cse1 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)) (= (mod (select (select .cse1 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0))))))) (forall ((v_ArrVal_165 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_165))) (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_168 (Array Int Int)) (v_ArrVal_167 (Array Int Int))) (let ((.cse2 (store (store (store .cse3 c_~var_1_1_Pointer~0.base (store (select .cse3 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_167) c_~var_1_15_Pointer~0.base v_ArrVal_168))) (or (= (mod (select (select .cse2 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= (mod (select (select .cse2 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1)))) (not (= (mod (select (select .cse3 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))) (forall ((v_ArrVal_165 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_165))) (or (= (mod (select (select .cse4 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_168 (Array Int Int)) (v_ArrVal_167 (Array Int Int))) (let ((.cse5 (store (store (store .cse4 c_~var_1_1_Pointer~0.base (store (select .cse4 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_167) c_~var_1_15_Pointer~0.base v_ArrVal_168))) (or (= (mod (select (select .cse5 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= (mod (select (select .cse5 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1))))))) (forall ((v_ArrVal_165 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_165))) (or (not (= (mod (select (select .cse6 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_168 (Array Int Int)) (v_ArrVal_167 (Array Int Int))) (let ((.cse7 (store (store (store .cse6 c_~var_1_1_Pointer~0.base (store (select .cse6 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_167) c_~var_1_15_Pointer~0.base v_ArrVal_168))) (or (= (mod (select (select .cse7 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse7 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))))))) is different from false [2023-11-06 21:14:49,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:49,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881698490] [2023-11-06 21:14:49,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:49,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563046205] [2023-11-06 21:14:49,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563046205] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:14:49,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:14:49,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-06 21:14:49,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918604189] [2023-11-06 21:14:49,847 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:14:49,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:14:49,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:49,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:14:49,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=339, Unknown=11, NotChecked=120, Total=552 [2023-11-06 21:14:49,849 INFO L87 Difference]: Start difference. First operand 100 states and 143 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 4 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 21:14:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:51,820 INFO L93 Difference]: Finished difference Result 324 states and 466 transitions. [2023-11-06 21:14:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:14:51,824 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 4 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 109 [2023-11-06 21:14:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:51,826 INFO L225 Difference]: With dead ends: 324 [2023-11-06 21:14:51,826 INFO L226 Difference]: Without dead ends: 227 [2023-11-06 21:14:51,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=229, Invalid=702, Unknown=11, NotChecked=180, Total=1122 [2023-11-06 21:14:51,829 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 756 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:51,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 755 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:14:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-11-06 21:14:51,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 111. [2023-11-06 21:14:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 96 states have (on average 1.3854166666666667) internal successors, (133), 96 states have internal predecessors, (133), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:14:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2023-11-06 21:14:51,850 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 109 [2023-11-06 21:14:51,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:51,850 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2023-11-06 21:14:51,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 4 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 21:14:51,851 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2023-11-06 21:14:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:14:51,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:51,853 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:51,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:52,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:52,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:52,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1725421557, now seen corresponding path program 1 times [2023-11-06 21:14:52,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:52,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944956285] [2023-11-06 21:14:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:52,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:52,091 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:52,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330286518] [2023-11-06 21:14:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:52,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:52,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:52,092 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:52,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:14:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:52,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 21:14:52,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:53,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:53,145 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 19 treesize of output 14 [2023-11-06 21:14:53,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:53,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:53,182 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 14 [2023-11-06 21:14:53,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:53,192 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 21:14:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:53,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:53,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:53,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944956285] [2023-11-06 21:14:53,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:53,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330286518] [2023-11-06 21:14:53,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330286518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:53,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:53,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:14:53,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296520121] [2023-11-06 21:14:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:53,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:14:53,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:53,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:14:53,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:14:53,227 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:53,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:53,718 INFO L93 Difference]: Finished difference Result 272 states and 391 transitions. [2023-11-06 21:14:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:14:53,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:14:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:53,723 INFO L225 Difference]: With dead ends: 272 [2023-11-06 21:14:53,724 INFO L226 Difference]: Without dead ends: 164 [2023-11-06 21:14:53,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 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 21:14:53,725 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 235 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:53,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 369 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:14:53,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-06 21:14:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 119. [2023-11-06 21:14:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 104 states have (on average 1.3942307692307692) internal successors, (145), 104 states have internal predecessors, (145), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:14:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 171 transitions. [2023-11-06 21:14:53,751 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 171 transitions. Word has length 109 [2023-11-06 21:14:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:53,752 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 171 transitions. [2023-11-06 21:14:53,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 171 transitions. [2023-11-06 21:14:53,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:14:53,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:53,754 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:53,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:53,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:53,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:53,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash -382462684, now seen corresponding path program 1 times [2023-11-06 21:14:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:53,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642844487] [2023-11-06 21:14:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:53,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:53,994 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:53,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242395680] [2023-11-06 21:14:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:53,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:53,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:53,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:54,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:14:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:54,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 21:14:54,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:55,325 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 21:14:55,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:55,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:55,468 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 34 treesize of output 30 [2023-11-06 21:14:55,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:55,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:55,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:55,534 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2023-11-06 21:14:55,593 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 47 treesize of output 23 [2023-11-06 21:14:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:55,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:55,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:55,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642844487] [2023-11-06 21:14:55,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:55,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242395680] [2023-11-06 21:14:55,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242395680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:55,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:55,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:14:55,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090601181] [2023-11-06 21:14:55,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:55,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:14:55,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:55,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:14:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:14:55,627 INFO L87 Difference]: Start difference. First operand 119 states and 171 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:56,325 INFO L93 Difference]: Finished difference Result 290 states and 419 transitions. [2023-11-06 21:14:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:14:56,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:14:56,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:56,328 INFO L225 Difference]: With dead ends: 290 [2023-11-06 21:14:56,328 INFO L226 Difference]: Without dead ends: 174 [2023-11-06 21:14:56,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:14:56,330 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 281 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:56,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 375 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:14:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-06 21:14:56,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 125. [2023-11-06 21:14:56,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 110 states have internal predecessors, (153), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:14:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 179 transitions. [2023-11-06 21:14:56,347 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 179 transitions. Word has length 109 [2023-11-06 21:14:56,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:56,348 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 179 transitions. [2023-11-06 21:14:56,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 179 transitions. [2023-11-06 21:14:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:14:56,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:56,350 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:56,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:56,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:56,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:56,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash -485498485, now seen corresponding path program 1 times [2023-11-06 21:14:56,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:56,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420853902] [2023-11-06 21:14:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:56,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:56,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:56,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927871774] [2023-11-06 21:14:56,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:56,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:56,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:56,612 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:56,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:14:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:56,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 21:14:56,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:57,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:57,646 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 21:14:57,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:57,675 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 21:14:57,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:57,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:57,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-06 21:14:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:57,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:14:57,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:57,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420853902] [2023-11-06 21:14:57,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:57,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927871774] [2023-11-06 21:14:57,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927871774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:57,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:57,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:14:57,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871246788] [2023-11-06 21:14:57,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:57,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:14:57,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:57,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:14:57,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:14:57,732 INFO L87 Difference]: Start difference. First operand 125 states and 179 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:58,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:58,408 INFO L93 Difference]: Finished difference Result 367 states and 528 transitions. [2023-11-06 21:14:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:14:58,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:14:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:58,413 INFO L225 Difference]: With dead ends: 367 [2023-11-06 21:14:58,413 INFO L226 Difference]: Without dead ends: 245 [2023-11-06 21:14:58,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 102 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 21:14:58,414 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 338 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:58,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 599 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:14:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-06 21:14:58,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 133. [2023-11-06 21:14:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 118 states have (on average 1.4067796610169492) internal successors, (166), 118 states have internal predecessors, (166), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:14:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 192 transitions. [2023-11-06 21:14:58,435 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 192 transitions. Word has length 109 [2023-11-06 21:14:58,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:58,436 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 192 transitions. [2023-11-06 21:14:58,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:14:58,436 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 192 transitions. [2023-11-06 21:14:58,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:14:58,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:58,438 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:58,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:58,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:58,645 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:58,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:58,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1506566839, now seen corresponding path program 1 times [2023-11-06 21:14:58,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:58,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837971821] [2023-11-06 21:14:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:58,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:58,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:14:58,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175333752] [2023-11-06 21:14:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:58,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:58,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:58,697 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:58,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:14:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:58,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 21:14:58,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:59,431 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 21:14:59,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:59,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:14:59,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:59,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:59,478 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-06 21:14:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-06 21:14:59,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:14:59,632 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_342 (Array Int Int)) (v_ArrVal_341 (Array Int Int))) (= (mod (select (select (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_342) c_~var_1_15_Pointer~0.base v_ArrVal_341) c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset) 256) 0)) is different from false [2023-11-06 21:14:59,642 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 82 treesize of output 78 [2023-11-06 21:14:59,647 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 58 treesize of output 54 [2023-11-06 21:14:59,653 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 26 treesize of output 24 [2023-11-06 21:14:59,668 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:14:59,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 36 [2023-11-06 21:14:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:14:59,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:59,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837971821] [2023-11-06 21:14:59,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:14:59,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175333752] [2023-11-06 21:14:59,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175333752] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:14:59,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:14:59,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-06 21:14:59,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414848775] [2023-11-06 21:14:59,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:59,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:14:59,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:59,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:14:59,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=255, Unknown=1, NotChecked=32, Total=342 [2023-11-06 21:14:59,962 INFO L87 Difference]: Start difference. First operand 133 states and 192 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:00,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:00,539 INFO L93 Difference]: Finished difference Result 307 states and 441 transitions. [2023-11-06 21:15:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:15:00,540 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:15:00,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:00,544 INFO L225 Difference]: With dead ends: 307 [2023-11-06 21:15:00,544 INFO L226 Difference]: Without dead ends: 177 [2023-11-06 21:15:00,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=455, Unknown=1, NotChecked=44, Total=600 [2023-11-06 21:15:00,549 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 306 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:00,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 909 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 346 Invalid, 0 Unknown, 212 Unchecked, 0.4s Time] [2023-11-06 21:15:00,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-06 21:15:00,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2023-11-06 21:15:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 119 states have (on average 1.403361344537815) internal successors, (167), 119 states have internal predecessors, (167), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 193 transitions. [2023-11-06 21:15:00,572 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 193 transitions. Word has length 109 [2023-11-06 21:15:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:00,573 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 193 transitions. [2023-11-06 21:15:00,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 193 transitions. [2023-11-06 21:15:00,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:15:00,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:00,575 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:00,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:00,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:00,783 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:00,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:00,783 INFO L85 PathProgramCache]: Analyzing trace with hash 457002274, now seen corresponding path program 1 times [2023-11-06 21:15:00,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:00,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22185923] [2023-11-06 21:15:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:00,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:00,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:00,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982862303] [2023-11-06 21:15:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:00,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:00,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:00,813 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:00,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:15:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:01,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 21:15:01,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:01,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:01,743 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 21:15:01,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:01,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:01,772 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-06 21:15:01,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:01,781 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 21:15:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:01,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:01,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:01,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22185923] [2023-11-06 21:15:01,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:01,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982862303] [2023-11-06 21:15:01,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982862303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:01,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:01,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:15:01,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371135026] [2023-11-06 21:15:01,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:01,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:15:01,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:01,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:15:01,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:15:01,817 INFO L87 Difference]: Start difference. First operand 134 states and 193 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:02,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:02,498 INFO L93 Difference]: Finished difference Result 393 states and 567 transitions. [2023-11-06 21:15:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:15:02,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:15:02,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:02,501 INFO L225 Difference]: With dead ends: 393 [2023-11-06 21:15:02,501 INFO L226 Difference]: Without dead ends: 262 [2023-11-06 21:15:02,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 102 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 21:15:02,503 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 286 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:02,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 577 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:15:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-06 21:15:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 139. [2023-11-06 21:15:02,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 124 states have internal predecessors, (175), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 201 transitions. [2023-11-06 21:15:02,519 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 201 transitions. Word has length 109 [2023-11-06 21:15:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:02,520 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 201 transitions. [2023-11-06 21:15:02,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:02,521 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 201 transitions. [2023-11-06 21:15:02,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:15:02,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:02,523 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:02,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:02,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:02,730 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:02,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash -564066080, now seen corresponding path program 1 times [2023-11-06 21:15:02,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:02,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706454868] [2023-11-06 21:15:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:02,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:02,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:02,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416055701] [2023-11-06 21:15:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:02,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:02,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:02,772 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:02,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 21:15:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:03,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 21:15:03,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:03,669 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 21:15:03,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:03,710 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 21:15:03,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:03,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:03,739 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-06 21:15:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-06 21:15:03,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:03,941 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:03,941 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 23 treesize of output 24 [2023-11-06 21:15:03,945 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 82 treesize of output 70 [2023-11-06 21:15:03,951 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 28 treesize of output 26 [2023-11-06 21:15:03,956 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 54 treesize of output 50 [2023-11-06 21:15:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:04,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:04,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706454868] [2023-11-06 21:15:04,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:04,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416055701] [2023-11-06 21:15:04,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416055701] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:04,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:04,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-06 21:15:04,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890466750] [2023-11-06 21:15:04,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:04,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:15:04,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:04,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:15:04,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=281, Unknown=6, NotChecked=0, Total=342 [2023-11-06 21:15:04,209 INFO L87 Difference]: Start difference. First operand 139 states and 201 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:04,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:04,899 INFO L93 Difference]: Finished difference Result 361 states and 522 transitions. [2023-11-06 21:15:04,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:15:04,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:15:04,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:04,906 INFO L225 Difference]: With dead ends: 361 [2023-11-06 21:15:04,906 INFO L226 Difference]: Without dead ends: 225 [2023-11-06 21:15:04,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=529, Unknown=6, NotChecked=0, Total=650 [2023-11-06 21:15:04,908 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 447 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:04,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 902 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:15:04,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-06 21:15:04,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 141. [2023-11-06 21:15:04,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 126 states have (on average 1.4126984126984128) internal successors, (178), 126 states have internal predecessors, (178), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:04,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 204 transitions. [2023-11-06 21:15:04,923 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 204 transitions. Word has length 109 [2023-11-06 21:15:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:04,924 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 204 transitions. [2023-11-06 21:15:04,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 204 transitions. [2023-11-06 21:15:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:15:04,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:04,926 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:04,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-06 21:15:05,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 21:15:05,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:05,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:05,133 INFO L85 PathProgramCache]: Analyzing trace with hash 778892793, now seen corresponding path program 1 times [2023-11-06 21:15:05,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:05,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286364549] [2023-11-06 21:15:05,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:05,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:05,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:05,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24690760] [2023-11-06 21:15:05,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:05,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:05,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:05,160 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:05,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 21:15:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:05,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 21:15:05,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:06,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:06,104 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 21:15:06,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:06,127 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 21:15:06,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:06,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:06,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-06 21:15:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:06,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286364549] [2023-11-06 21:15:06,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24690760] [2023-11-06 21:15:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24690760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:06,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:06,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:15:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231966236] [2023-11-06 21:15:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:06,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:15:06,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:15:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:15:06,181 INFO L87 Difference]: Start difference. First operand 141 states and 204 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:06,703 INFO L93 Difference]: Finished difference Result 403 states and 581 transitions. [2023-11-06 21:15:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:15:06,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:15:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:06,714 INFO L225 Difference]: With dead ends: 403 [2023-11-06 21:15:06,714 INFO L226 Difference]: Without dead ends: 265 [2023-11-06 21:15:06,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 102 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 21:15:06,716 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 397 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:06,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 524 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:15:06,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-06 21:15:06,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 149. [2023-11-06 21:15:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 134 states have internal predecessors, (191), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 217 transitions. [2023-11-06 21:15:06,733 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 217 transitions. Word has length 109 [2023-11-06 21:15:06,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:06,733 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 217 transitions. [2023-11-06 21:15:06,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:06,734 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 217 transitions. [2023-11-06 21:15:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:15:06,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:06,735 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:06,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:06,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 21:15:06,936 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:06,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash -242175561, now seen corresponding path program 1 times [2023-11-06 21:15:06,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:06,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881314983] [2023-11-06 21:15:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:06,978 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:06,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401124258] [2023-11-06 21:15:06,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:06,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:06,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:06,994 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:07,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 21:15:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:07,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 21:15:07,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:07,730 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 21:15:07,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:07,757 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 21:15:07,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:07,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:07,777 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-06 21:15:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-06 21:15:07,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:07,958 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:07,958 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 23 treesize of output 24 [2023-11-06 21:15:07,962 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 82 treesize of output 70 [2023-11-06 21:15:07,967 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 56 treesize of output 52 [2023-11-06 21:15:07,977 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 26 treesize of output 24 [2023-11-06 21:15:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:08,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881314983] [2023-11-06 21:15:08,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401124258] [2023-11-06 21:15:08,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401124258] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:08,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:08,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-06 21:15:08,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985067139] [2023-11-06 21:15:08,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:08,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:15:08,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:08,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:15:08,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=279, Unknown=8, NotChecked=0, Total=342 [2023-11-06 21:15:08,218 INFO L87 Difference]: Start difference. First operand 149 states and 217 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:08,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:08,922 INFO L93 Difference]: Finished difference Result 374 states and 540 transitions. [2023-11-06 21:15:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:15:08,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:15:08,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:08,926 INFO L225 Difference]: With dead ends: 374 [2023-11-06 21:15:08,926 INFO L226 Difference]: Without dead ends: 228 [2023-11-06 21:15:08,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=527, Unknown=8, NotChecked=0, Total=650 [2023-11-06 21:15:08,928 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 385 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:08,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1129 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:15:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-06 21:15:08,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 151. [2023-11-06 21:15:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 136 states have (on average 1.4191176470588236) internal successors, (193), 136 states have internal predecessors, (193), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2023-11-06 21:15:08,945 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 109 [2023-11-06 21:15:08,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:08,946 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2023-11-06 21:15:08,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:08,946 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2023-11-06 21:15:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:15:08,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:08,948 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:08,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-06 21:15:09,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 21:15:09,154 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:09,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash 238147556, now seen corresponding path program 1 times [2023-11-06 21:15:09,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:09,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778993826] [2023-11-06 21:15:09,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:09,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:09,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342605692] [2023-11-06 21:15:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:09,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:09,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:09,182 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:09,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 21:15:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:09,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 21:15:09,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:10,304 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 21:15:10,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:10,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:10,400 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 32 treesize of output 28 [2023-11-06 21:15:10,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:10,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:10,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:10,441 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2023-11-06 21:15:10,477 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 45 treesize of output 21 [2023-11-06 21:15:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:10,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:10,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:10,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778993826] [2023-11-06 21:15:10,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:10,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342605692] [2023-11-06 21:15:10,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342605692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:10,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:10,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:15:10,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617921653] [2023-11-06 21:15:10,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:10,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:15:10,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:15:10,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:15:10,505 INFO L87 Difference]: Start difference. First operand 151 states and 219 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:12,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:12,402 INFO L93 Difference]: Finished difference Result 347 states and 501 transitions. [2023-11-06 21:15:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:15:12,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:15:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:12,405 INFO L225 Difference]: With dead ends: 347 [2023-11-06 21:15:12,405 INFO L226 Difference]: Without dead ends: 199 [2023-11-06 21:15:12,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 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 21:15:12,407 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 203 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:12,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 491 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 21:15:12,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-06 21:15:12,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 153. [2023-11-06 21:15:12,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 138 states have (on average 1.4057971014492754) internal successors, (194), 138 states have internal predecessors, (194), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 220 transitions. [2023-11-06 21:15:12,422 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 220 transitions. Word has length 109 [2023-11-06 21:15:12,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:12,423 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 220 transitions. [2023-11-06 21:15:12,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:12,423 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 220 transitions. [2023-11-06 21:15:12,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:15:12,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:12,425 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:12,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:12,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:12,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:12,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:12,632 INFO L85 PathProgramCache]: Analyzing trace with hash 560038075, now seen corresponding path program 1 times [2023-11-06 21:15:12,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:12,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27900822] [2023-11-06 21:15:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:12,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:12,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:12,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767197124] [2023-11-06 21:15:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:12,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:12,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:12,659 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:12,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 21:15:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:12,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 21:15:12,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:13,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:13,627 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 41 treesize of output 25 [2023-11-06 21:15:13,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:13,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:13,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:13,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:13,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:13,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2023-11-06 21:15:13,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:13,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:13,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:13,733 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 45 treesize of output 39 [2023-11-06 21:15:13,930 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:13,930 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 74 treesize of output 86 [2023-11-06 21:15:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-06 21:15:14,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:14,227 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_605 (Array Int Int)) (v_ArrVal_604 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_605) c_~var_1_15_Pointer~0.base v_ArrVal_604))) (or (not (= (mod (select (select .cse0 c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0)) (= (mod (select (select .cse0 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset) 256) 0)))) (forall ((v_ArrVal_605 (Array Int Int)) (v_ArrVal_604 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_605) c_~var_1_15_Pointer~0.base v_ArrVal_604))) (or (= (mod (select (select .cse1 c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0) (= (mod (select (select .cse1 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset) 256) 1))))) is different from false [2023-11-06 21:15:14,318 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| c_~var_1_1_Pointer~0.base))) (and (or (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_605 (Array Int Int)) (v_ArrVal_604 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse1 ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_605) c_~var_1_15_Pointer~0.base v_ArrVal_604))) (or (= (mod (select (select .cse0 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse0 c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0))))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_605 (Array Int Int)) (v_ArrVal_604 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse1 ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_605) c_~var_1_15_Pointer~0.base v_ArrVal_604))) (or (= (mod (select (select .cse2 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1) (= (mod (select (select .cse2 c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0))))) (not |c_ULTIMATE.start_step_#t~short15#1|)) (or (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_605 (Array Int Int)) (v_ArrVal_604 (Array Int Int))) (let ((.cse3 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse1 ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_605) c_~var_1_15_Pointer~0.base v_ArrVal_604))) (or (= (mod (select (select .cse3 c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0) (= (mod (select (select .cse3 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1)))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_605 (Array Int Int)) (v_ArrVal_604 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse1 ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_605) c_~var_1_15_Pointer~0.base v_ArrVal_604))) (or (= (mod (select (select .cse4 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse4 c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0)))))) |c_ULTIMATE.start_step_#t~short15#1|))) is different from false [2023-11-06 21:15:14,616 INFO L322 Elim1Store]: treesize reduction 75, result has 54.5 percent of original size [2023-11-06 21:15:14,616 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 224 treesize of output 295 [2023-11-06 21:15:14,728 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:14,729 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 2453 treesize of output 2380 [2023-11-06 21:15:14,871 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:14,872 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 661 treesize of output 663 [2023-11-06 21:15:14,947 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:14,947 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 628 treesize of output 631 [2023-11-06 21:15:15,029 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:15,030 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 622 treesize of output 619 [2023-11-06 21:15:15,081 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:15,081 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 610 treesize of output 607 [2023-11-06 21:15:15,144 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:15,144 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 598 treesize of output 601 [2023-11-06 21:15:15,200 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:15,201 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 623 treesize of output 625 [2023-11-06 21:15:15,289 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:15,290 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 626 treesize of output 628 [2023-11-06 21:15:15,365 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:15,365 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 588 treesize of output 591 [2023-11-06 21:15:15,418 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:15,418 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 582 treesize of output 579 [2023-11-06 21:15:15,475 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:15,475 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 570 treesize of output 571 [2023-11-06 21:15:15,538 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:15,539 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 562 treesize of output 567 [2023-11-06 21:15:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:16,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:16,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27900822] [2023-11-06 21:15:16,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:16,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767197124] [2023-11-06 21:15:16,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767197124] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:16,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:16,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-06 21:15:16,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519528327] [2023-11-06 21:15:16,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:16,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:15:16,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:15:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=228, Unknown=2, NotChecked=62, Total=342 [2023-11-06 21:15:16,710 INFO L87 Difference]: Start difference. First operand 153 states and 220 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:17,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:17,827 INFO L93 Difference]: Finished difference Result 381 states and 547 transitions. [2023-11-06 21:15:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:15:17,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:15:17,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:17,830 INFO L225 Difference]: With dead ends: 381 [2023-11-06 21:15:17,830 INFO L226 Difference]: Without dead ends: 231 [2023-11-06 21:15:17,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=496, Unknown=2, NotChecked=94, Total=702 [2023-11-06 21:15:17,832 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 368 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 516 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:17,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 667 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 391 Invalid, 0 Unknown, 516 Unchecked, 0.5s Time] [2023-11-06 21:15:17,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-06 21:15:17,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 154. [2023-11-06 21:15:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 states have internal predecessors, (196), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 222 transitions. [2023-11-06 21:15:17,855 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 222 transitions. Word has length 109 [2023-11-06 21:15:17,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:17,856 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 222 transitions. [2023-11-06 21:15:17,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:17,856 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 222 transitions. [2023-11-06 21:15:17,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:15:17,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:17,858 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:17,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:18,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:18,071 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:18,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:18,071 INFO L85 PathProgramCache]: Analyzing trace with hash -461030279, now seen corresponding path program 1 times [2023-11-06 21:15:18,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:18,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045015868] [2023-11-06 21:15:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:18,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:18,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:18,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516324314] [2023-11-06 21:15:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:18,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:18,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:18,100 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:18,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 21:15:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:18,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 21:15:18,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:19,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:19,113 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 21:15:19,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:19,143 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 19 treesize of output 14 [2023-11-06 21:15:19,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:19,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:19,159 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 14 [2023-11-06 21:15:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:19,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:19,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:19,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045015868] [2023-11-06 21:15:19,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:19,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516324314] [2023-11-06 21:15:19,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516324314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:19,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:19,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:15:19,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138730368] [2023-11-06 21:15:19,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:19,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:15:19,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:19,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:15:19,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:15:19,232 INFO L87 Difference]: Start difference. First operand 154 states and 222 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:19,709 INFO L93 Difference]: Finished difference Result 356 states and 511 transitions. [2023-11-06 21:15:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:15:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2023-11-06 21:15:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:19,712 INFO L225 Difference]: With dead ends: 356 [2023-11-06 21:15:19,712 INFO L226 Difference]: Without dead ends: 205 [2023-11-06 21:15:19,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 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 21:15:19,713 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 163 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:19,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 537 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:15:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-06 21:15:19,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 157. [2023-11-06 21:15:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 142 states have (on average 1.4014084507042253) internal successors, (199), 142 states have internal predecessors, (199), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 225 transitions. [2023-11-06 21:15:19,729 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 225 transitions. Word has length 109 [2023-11-06 21:15:19,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:19,730 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 225 transitions. [2023-11-06 21:15:19,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 225 transitions. [2023-11-06 21:15:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 21:15:19,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:19,732 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:19,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-06 21:15:19,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 21:15:19,939 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:19,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:19,939 INFO L85 PathProgramCache]: Analyzing trace with hash -272774337, now seen corresponding path program 1 times [2023-11-06 21:15:19,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:19,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146738671] [2023-11-06 21:15:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:19,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:19,964 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:19,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391783174] [2023-11-06 21:15:19,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:19,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:19,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:19,966 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:20,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 21:15:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:20,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:15:20,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:20,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:20,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:20,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146738671] [2023-11-06 21:15:20,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:20,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391783174] [2023-11-06 21:15:20,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391783174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:20,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:20,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:15:20,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918994495] [2023-11-06 21:15:20,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:20,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:15:20,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:20,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:15:20,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:15:20,232 INFO L87 Difference]: Start difference. First operand 157 states and 225 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:20,283 INFO L93 Difference]: Finished difference Result 337 states and 485 transitions. [2023-11-06 21:15:20,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:15:20,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 111 [2023-11-06 21:15:20,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:20,285 INFO L225 Difference]: With dead ends: 337 [2023-11-06 21:15:20,286 INFO L226 Difference]: Without dead ends: 183 [2023-11-06 21:15:20,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:15:20,287 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 115 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:20,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 518 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:20,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-06 21:15:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 160. [2023-11-06 21:15:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 145 states have (on average 1.393103448275862) internal successors, (202), 145 states have internal predecessors, (202), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 228 transitions. [2023-11-06 21:15:20,303 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 228 transitions. Word has length 111 [2023-11-06 21:15:20,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:20,304 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 228 transitions. [2023-11-06 21:15:20,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 228 transitions. [2023-11-06 21:15:20,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 21:15:20,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:20,306 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:20,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-06 21:15:20,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 21:15:20,513 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:20,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:20,513 INFO L85 PathProgramCache]: Analyzing trace with hash -144457918, now seen corresponding path program 1 times [2023-11-06 21:15:20,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:20,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273770798] [2023-11-06 21:15:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:20,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:20,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:20,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991944648] [2023-11-06 21:15:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:20,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:20,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:20,549 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:20,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 21:15:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:20,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-06 21:15:20,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:22,359 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 21:15:22,712 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 21:15:22,965 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 21:15:23,205 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 21:15:23,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,324 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 60 treesize of output 49 [2023-11-06 21:15:23,330 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2023-11-06 21:15:23,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2023-11-06 21:15:23,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,450 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2023-11-06 21:15:23,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,478 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 45 treesize of output 39 [2023-11-06 21:15:23,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:23,707 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 26 treesize of output 24 [2023-11-06 21:15:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-06 21:15:23,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:24,080 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse0 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= (mod (select (select .cse0 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset) 256) 1)))) (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (not (= (mod (select (select .cse1 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)) (= (mod (select (select .cse1 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset) 256) 0))))) is different from false [2023-11-06 21:15:24,618 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| c_~var_1_1_Pointer~0.base))) (and (or (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse2 ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (= (mod (select (select .cse0 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse1 (store .cse0 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse1 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1) (= (mod (select (select .cse1 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse2 ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse3 (store .cse4 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse3 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse3 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))) (= (mod (select (select .cse4 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))) (not |c_ULTIMATE.start_step_#t~short18#1|)) (or |c_ULTIMATE.start_step_#t~short18#1| (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse6 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse2 ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse5 (store .cse6 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse5 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= (mod (select (select .cse5 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1)))) (= 0 (mod (select (select .cse6 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256))))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse8 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse2 ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse7 (store .cse8 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse7 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse7 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))) (= 0 (mod (select (select .cse8 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256))))))))) is different from false [2023-11-06 21:15:24,948 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (= (mod (select (select |c_#memory_int| c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)) (.cse3 (select |c_#memory_int| c_~var_1_1_Pointer~0.base))) (and (or (not .cse0) (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse3 ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse1 (store .cse2 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse1 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= (mod (select (select .cse1 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1)))) (= 0 (mod (select (select .cse2 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256))))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse5 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse3 ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse4 (store .cse5 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse4 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse4 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))) (= 0 (mod (select (select .cse5 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256))))))) (or .cse0 (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse6 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse3 ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (= (mod (select (select .cse6 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse7 (store .cse6 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse7 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1) (= (mod (select (select .cse7 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse9 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base (store .cse3 ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse8 (store .cse9 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse8 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse8 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))) (= (mod (select (select .cse9 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)))))))) is different from false [2023-11-06 21:15:25,217 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_737 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_737))) (or (not (= (mod (select (select .cse0 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse2 (store (store (store .cse0 c_~var_1_1_Pointer~0.base (store (select .cse0 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse1 (store .cse2 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse1 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= 1 (mod (select (select .cse1 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256))))) (= (mod (select (select .cse2 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))))) (forall ((v_ArrVal_737 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_737))) (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse4 (store (store (store .cse5 c_~var_1_1_Pointer~0.base (store (select .cse5 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse3 (store .cse4 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse3 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse3 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))) (= (mod (select (select .cse4 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)))) (= (mod (select (select .cse5 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)))) (forall ((v_ArrVal_737 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_737))) (or (not (= (mod (select (select .cse6 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse7 (store (store (store .cse6 c_~var_1_1_Pointer~0.base (store (select .cse6 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (= (mod (select (select .cse7 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse8 (store .cse7 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (not (= (mod (select (select .cse8 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)) (= 0 (mod (select (select .cse8 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256))))))))))) (forall ((v_ArrVal_737 (Array Int Int))) (let ((.cse11 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_737))) (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_739 (Array Int Int)) (v_ArrVal_740 (Array Int Int))) (let ((.cse9 (store (store (store .cse11 c_~var_1_1_Pointer~0.base (store (select .cse11 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_740) c_~var_1_15_Pointer~0.base v_ArrVal_739))) (or (= (mod (select (select .cse9 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (forall ((v_ArrVal_741 (Array Int Int))) (let ((.cse10 (store .cse9 c_~var_1_11_Pointer~0.base v_ArrVal_741))) (or (= (mod (select (select .cse10 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= (mod (select (select .cse10 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1))))))) (= (mod (select (select .cse11 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))) is different from false [2023-11-06 21:15:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:25,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273770798] [2023-11-06 21:15:25,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:25,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991944648] [2023-11-06 21:15:25,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991944648] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:25,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:25,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-06 21:15:25,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82395108] [2023-11-06 21:15:25,745 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:25,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 21:15:25,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:25,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 21:15:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=536, Unknown=30, NotChecked=204, Total=870 [2023-11-06 21:15:25,747 INFO L87 Difference]: Start difference. First operand 160 states and 228 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 18 states have internal predecessors, (62), 4 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 21:15:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:28,439 INFO L93 Difference]: Finished difference Result 488 states and 688 transitions. [2023-11-06 21:15:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 21:15:28,448 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 18 states have internal predecessors, (62), 4 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 112 [2023-11-06 21:15:28,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:28,451 INFO L225 Difference]: With dead ends: 488 [2023-11-06 21:15:28,451 INFO L226 Difference]: Without dead ends: 331 [2023-11-06 21:15:28,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=345, Invalid=1197, Unknown=34, NotChecked=316, Total=1892 [2023-11-06 21:15:28,454 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 738 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:28,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1152 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 21:15:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-06 21:15:28,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 165. [2023-11-06 21:15:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 150 states have (on average 1.4) internal successors, (210), 150 states have internal predecessors, (210), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 236 transitions. [2023-11-06 21:15:28,473 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 236 transitions. Word has length 112 [2023-11-06 21:15:28,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:28,474 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 236 transitions. [2023-11-06 21:15:28,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 18 states have internal predecessors, (62), 4 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 21:15:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 236 transitions. [2023-11-06 21:15:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 21:15:28,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:28,476 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:28,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:28,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 21:15:28,684 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:28,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:28,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1165526272, now seen corresponding path program 1 times [2023-11-06 21:15:28,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:28,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091431908] [2023-11-06 21:15:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:28,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:28,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:28,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733176632] [2023-11-06 21:15:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:28,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:28,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:28,730 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:28,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 21:15:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:28,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 21:15:28,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:29,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:29,949 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 21:15:29,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:29,987 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 19 treesize of output 14 [2023-11-06 21:15:29,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:29,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:30,001 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 14 [2023-11-06 21:15:30,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:30,046 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 21:15:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:30,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:30,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091431908] [2023-11-06 21:15:30,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733176632] [2023-11-06 21:15:30,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733176632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:30,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:30,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:15:30,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306021732] [2023-11-06 21:15:30,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:30,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:15:30,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:30,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:15:30,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:15:30,084 INFO L87 Difference]: Start difference. First operand 165 states and 236 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:30,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:30,501 INFO L93 Difference]: Finished difference Result 375 states and 533 transitions. [2023-11-06 21:15:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:15:30,501 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 112 [2023-11-06 21:15:30,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:30,503 INFO L225 Difference]: With dead ends: 375 [2023-11-06 21:15:30,503 INFO L226 Difference]: Without dead ends: 213 [2023-11-06 21:15:30,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:15:30,505 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 376 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:30,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 321 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:15:30,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-06 21:15:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 162. [2023-11-06 21:15:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 147 states have (on average 1.3945578231292517) internal successors, (205), 147 states have internal predecessors, (205), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 231 transitions. [2023-11-06 21:15:30,527 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 231 transitions. Word has length 112 [2023-11-06 21:15:30,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:30,528 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 231 transitions. [2023-11-06 21:15:30,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 231 transitions. [2023-11-06 21:15:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 21:15:30,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:30,530 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:30,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:30,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 21:15:30,744 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:30,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:30,744 INFO L85 PathProgramCache]: Analyzing trace with hash 177432601, now seen corresponding path program 1 times [2023-11-06 21:15:30,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:30,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262799170] [2023-11-06 21:15:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:30,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:30,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:30,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844008307] [2023-11-06 21:15:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:30,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:30,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:30,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:30,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 21:15:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:31,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 21:15:31,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:32,167 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 21:15:32,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:32,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:32,339 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 34 treesize of output 30 [2023-11-06 21:15:32,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:32,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:32,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:32,405 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2023-11-06 21:15:32,487 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 34 treesize of output 30 [2023-11-06 21:15:32,522 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 47 treesize of output 23 [2023-11-06 21:15:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:32,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:32,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:32,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262799170] [2023-11-06 21:15:32,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:32,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844008307] [2023-11-06 21:15:32,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844008307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:32,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:32,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:15:32,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047653983] [2023-11-06 21:15:32,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:32,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:15:32,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:32,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:15:32,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:15:32,552 INFO L87 Difference]: Start difference. First operand 162 states and 231 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:34,978 INFO L93 Difference]: Finished difference Result 373 states and 529 transitions. [2023-11-06 21:15:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:15:34,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 112 [2023-11-06 21:15:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:34,981 INFO L225 Difference]: With dead ends: 373 [2023-11-06 21:15:34,981 INFO L226 Difference]: Without dead ends: 214 [2023-11-06 21:15:34,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:15:34,982 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 353 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:34,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 426 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 21:15:34,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-06 21:15:34,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 164. [2023-11-06 21:15:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 149 states have (on average 1.3825503355704698) internal successors, (206), 149 states have internal predecessors, (206), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:35,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 232 transitions. [2023-11-06 21:15:35,000 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 232 transitions. Word has length 112 [2023-11-06 21:15:35,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:35,001 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 232 transitions. [2023-11-06 21:15:35,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:35,001 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 232 transitions. [2023-11-06 21:15:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 21:15:35,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:35,003 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:35,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:35,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:35,210 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:35,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash -3909308, now seen corresponding path program 1 times [2023-11-06 21:15:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705871438] [2023-11-06 21:15:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:35,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:35,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:35,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334815220] [2023-11-06 21:15:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:35,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:35,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:35,238 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:35,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 21:15:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:35,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 21:15:35,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:36,430 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 21:15:36,827 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 21:15:37,150 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 21:15:37,446 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 21:15:37,717 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 21:15:37,955 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 21:15:38,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:38,094 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 21:15:38,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:38,132 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 21:15:38,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:38,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:38,143 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-06 21:15:38,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:38,201 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 21:15:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-06 21:15:38,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:38,600 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_889 (Array Int Int)) (v_ArrVal_890 (Array Int Int)) (v_ArrVal_892 (Array Int Int)) (v_ArrVal_891 (Array Int Int)) (v_ArrVal_893 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_889))) (or (not (= (mod (select (select .cse0 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) 256) 0)) (= (mod (select (select (store (store (store (store .cse0 c_~var_1_1_Pointer~0.base v_ArrVal_890) c_~var_1_13_Pointer~0.base v_ArrVal_891) c_~var_1_15_Pointer~0.base v_ArrVal_892) c_~var_1_11_Pointer~0.base v_ArrVal_893) c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) 256) 0)))) is different from false [2023-11-06 21:15:38,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:38,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705871438] [2023-11-06 21:15:38,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:38,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334815220] [2023-11-06 21:15:38,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334815220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:38,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:38,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-06 21:15:38,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346137331] [2023-11-06 21:15:38,645 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:38,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:15:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:38,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:15:38,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=318, Unknown=13, NotChecked=38, Total=462 [2023-11-06 21:15:38,647 INFO L87 Difference]: Start difference. First operand 164 states and 232 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 6 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-06 21:15:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:39,585 INFO L93 Difference]: Finished difference Result 411 states and 578 transitions. [2023-11-06 21:15:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:15:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 6 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 112 [2023-11-06 21:15:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:39,589 INFO L225 Difference]: With dead ends: 411 [2023-11-06 21:15:39,589 INFO L226 Difference]: Without dead ends: 250 [2023-11-06 21:15:39,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=462, Unknown=13, NotChecked=48, Total=702 [2023-11-06 21:15:39,592 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 530 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:39,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 483 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 21:15:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-06 21:15:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 162. [2023-11-06 21:15:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 147 states have (on average 1.3877551020408163) internal successors, (204), 147 states have internal predecessors, (204), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 230 transitions. [2023-11-06 21:15:39,618 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 230 transitions. Word has length 112 [2023-11-06 21:15:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:39,618 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 230 transitions. [2023-11-06 21:15:39,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 6 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-06 21:15:39,619 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 230 transitions. [2023-11-06 21:15:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 21:15:39,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:39,620 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:39,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:39,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:39,828 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:39,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1024977662, now seen corresponding path program 1 times [2023-11-06 21:15:39,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:39,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089847010] [2023-11-06 21:15:39,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:39,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:39,851 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:39,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406375899] [2023-11-06 21:15:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:39,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:39,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:39,852 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:39,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 21:15:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:40,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 21:15:40,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:40,851 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 21:15:40,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:40,878 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 16 treesize of output 11 [2023-11-06 21:15:40,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:40,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:40,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-06 21:15:40,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:40,923 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 21:15:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-06 21:15:40,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:41,185 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 1102 treesize of output 1098 [2023-11-06 21:15:41,209 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 63 treesize of output 61 [2023-11-06 21:15:41,216 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 61 treesize of output 57 [2023-11-06 21:15:41,229 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:15:41,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 36 [2023-11-06 21:15:41,240 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 62 treesize of output 54 [2023-11-06 21:15:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:41,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:41,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089847010] [2023-11-06 21:15:41,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:41,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406375899] [2023-11-06 21:15:41,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406375899] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:41,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:41,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2023-11-06 21:15:41,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864783929] [2023-11-06 21:15:41,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:41,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:15:41,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:41,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:15:41,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=349, Unknown=6, NotChecked=0, Total=420 [2023-11-06 21:15:41,589 INFO L87 Difference]: Start difference. First operand 162 states and 230 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:42,796 INFO L93 Difference]: Finished difference Result 369 states and 520 transitions. [2023-11-06 21:15:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:15:42,797 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 112 [2023-11-06 21:15:42,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:42,798 INFO L225 Difference]: With dead ends: 369 [2023-11-06 21:15:42,799 INFO L226 Difference]: Without dead ends: 210 [2023-11-06 21:15:42,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=575, Unknown=6, NotChecked=0, Total=702 [2023-11-06 21:15:42,801 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 441 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:42,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 928 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 21:15:42,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-06 21:15:42,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 160. [2023-11-06 21:15:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 145 states have (on average 1.393103448275862) internal successors, (202), 145 states have internal predecessors, (202), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 228 transitions. [2023-11-06 21:15:42,820 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 228 transitions. Word has length 112 [2023-11-06 21:15:42,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:42,821 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 228 transitions. [2023-11-06 21:15:42,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:42,821 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 228 transitions. [2023-11-06 21:15:42,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 21:15:42,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:42,823 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:42,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:43,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:43,030 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:43,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1834988109, now seen corresponding path program 1 times [2023-11-06 21:15:43,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:43,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17728355] [2023-11-06 21:15:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:43,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:43,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:43,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205635341] [2023-11-06 21:15:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:43,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:43,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:43,058 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:43,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 21:15:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:43,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 21:15:43,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:44,386 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 21:15:44,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:44,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:44,596 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 32 treesize of output 28 [2023-11-06 21:15:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:44,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:44,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:44,782 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2023-11-06 21:15:44,879 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 32 treesize of output 28 [2023-11-06 21:15:44,919 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 45 treesize of output 21 [2023-11-06 21:15:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:15:45,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:45,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:45,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17728355] [2023-11-06 21:15:45,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:45,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205635341] [2023-11-06 21:15:45,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205635341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:45,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:45,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:15:45,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405999019] [2023-11-06 21:15:45,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:45,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:15:45,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:45,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:15:45,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:15:45,010 INFO L87 Difference]: Start difference. First operand 160 states and 228 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:47,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:47,960 INFO L93 Difference]: Finished difference Result 357 states and 506 transitions. [2023-11-06 21:15:47,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:15:47,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 112 [2023-11-06 21:15:47,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:47,963 INFO L225 Difference]: With dead ends: 357 [2023-11-06 21:15:47,963 INFO L226 Difference]: Without dead ends: 200 [2023-11-06 21:15:47,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:15:47,965 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 358 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:47,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 448 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 21:15:47,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-06 21:15:47,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 157. [2023-11-06 21:15:47,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 142 states have (on average 1.3732394366197183) internal successors, (195), 142 states have internal predecessors, (195), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 221 transitions. [2023-11-06 21:15:47,984 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 221 transitions. Word has length 112 [2023-11-06 21:15:47,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:47,984 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 221 transitions. [2023-11-06 21:15:47,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:15:47,985 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 221 transitions. [2023-11-06 21:15:47,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 21:15:47,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:47,986 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:47,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:48,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:48,193 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:48,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2138088668, now seen corresponding path program 1 times [2023-11-06 21:15:48,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:48,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845823033] [2023-11-06 21:15:48,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:48,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:48,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:48,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000620910] [2023-11-06 21:15:48,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:48,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:48,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:48,220 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:48,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-06 21:15:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:48,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 21:15:48,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:49,340 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 21:15:49,708 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 21:15:50,034 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 21:15:50,302 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 21:15:50,543 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 21:15:50,777 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 21:15:50,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:50,917 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 21:15:50,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:50,960 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 18 treesize of output 13 [2023-11-06 21:15:50,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:50,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:50,984 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-06 21:15:51,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:15:51,047 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 21:15:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-06 21:15:51,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:57,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:57,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845823033] [2023-11-06 21:15:57,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:15:57,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000620910] [2023-11-06 21:15:57,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000620910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:57,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:57,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-06 21:15:57,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629397072] [2023-11-06 21:15:57,760 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:57,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:15:57,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:57,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:15:57,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=338, Unknown=22, NotChecked=0, Total=462 [2023-11-06 21:15:57,762 INFO L87 Difference]: Start difference. First operand 157 states and 221 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 6 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-06 21:15:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:58,729 INFO L93 Difference]: Finished difference Result 400 states and 560 transitions. [2023-11-06 21:15:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:15:58,730 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 6 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 112 [2023-11-06 21:15:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:58,732 INFO L225 Difference]: With dead ends: 400 [2023-11-06 21:15:58,732 INFO L226 Difference]: Without dead ends: 246 [2023-11-06 21:15:58,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=193, Invalid=487, Unknown=22, NotChecked=0, Total=702 [2023-11-06 21:15:58,733 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 605 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:58,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 481 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 21:15:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-06 21:15:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 159. [2023-11-06 21:15:58,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 144 states have (on average 1.375) internal successors, (198), 144 states have internal predecessors, (198), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:15:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 224 transitions. [2023-11-06 21:15:58,754 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 224 transitions. Word has length 112 [2023-11-06 21:15:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:58,754 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 224 transitions. [2023-11-06 21:15:58,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 6 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-06 21:15:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 224 transitions. [2023-11-06 21:15:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 21:15:58,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:58,756 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:58,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-06 21:15:58,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:58,962 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:58,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:58,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1135810274, now seen corresponding path program 1 times [2023-11-06 21:15:58,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:58,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339784286] [2023-11-06 21:15:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:58,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:15:58,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852737192] [2023-11-06 21:15:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:58,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:58,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:58,998 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:59,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 21:15:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:59,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 21:15:59,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:59,974 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 21:16:00,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:00,013 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 21:16:00,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:00,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:00,027 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-06 21:16:00,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:00,071 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 21:16:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-06 21:16:00,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:00,224 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1094 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| c_~var_1_11_Pointer~0.base v_ArrVal_1094) c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset) 256) 0)) is different from false [2023-11-06 21:16:00,299 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:16:00,299 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 26 treesize of output 27 [2023-11-06 21:16:00,302 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 150 treesize of output 138 [2023-11-06 21:16:00,322 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 124 treesize of output 116 [2023-11-06 21:16:00,327 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 116 treesize of output 112 [2023-11-06 21:16:00,335 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 56 treesize of output 54 [2023-11-06 21:16:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:16:00,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:00,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339784286] [2023-11-06 21:16:00,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:00,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852737192] [2023-11-06 21:16:00,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852737192] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:00,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:00,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2023-11-06 21:16:00,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45349062] [2023-11-06 21:16:00,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:00,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:16:00,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:00,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:16:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=312, Unknown=10, NotChecked=36, Total=420 [2023-11-06 21:16:00,853 INFO L87 Difference]: Start difference. First operand 159 states and 224 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:16:01,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:01,622 INFO L93 Difference]: Finished difference Result 362 states and 507 transitions. [2023-11-06 21:16:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:16:01,622 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 112 [2023-11-06 21:16:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:01,624 INFO L225 Difference]: With dead ends: 362 [2023-11-06 21:16:01,624 INFO L226 Difference]: Without dead ends: 206 [2023-11-06 21:16:01,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=531, Unknown=10, NotChecked=48, Total=702 [2023-11-06 21:16:01,626 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 380 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:01,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 925 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 449 Invalid, 0 Unknown, 209 Unchecked, 0.5s Time] [2023-11-06 21:16:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-06 21:16:01,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 156. [2023-11-06 21:16:01,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 141 states have (on average 1.3829787234042554) internal successors, (195), 141 states have internal predecessors, (195), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:16:01,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 221 transitions. [2023-11-06 21:16:01,641 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 221 transitions. Word has length 112 [2023-11-06 21:16:01,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:01,642 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 221 transitions. [2023-11-06 21:16:01,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:16:01,642 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 221 transitions. [2023-11-06 21:16:01,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 21:16:01,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:01,644 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:01,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:01,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 21:16:01,850 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:01,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:01,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2016330018, now seen corresponding path program 1 times [2023-11-06 21:16:01,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:01,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991148619] [2023-11-06 21:16:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:01,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:01,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:01,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004193216] [2023-11-06 21:16:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:01,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:01,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:01,875 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:01,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 21:16:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:02,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-06 21:16:02,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:02,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:02,389 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 21:16:03,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:03,102 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 21:16:03,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:03,514 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 21:16:03,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:03,875 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 21:16:04,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:04,257 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 21:16:04,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:04,532 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 21:16:04,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:04,829 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 21:16:04,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:04,901 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 21:16:04,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:04,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:04,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-06 21:16:04,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:04,957 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 21:16:04,995 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 17 treesize of output 9 [2023-11-06 21:16:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-06 21:16:05,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:05,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:05,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991148619] [2023-11-06 21:16:05,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:05,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004193216] [2023-11-06 21:16:05,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004193216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:05,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:05,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-06 21:16:05,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182640270] [2023-11-06 21:16:05,264 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:05,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:16:05,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:16:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=154, Unknown=5, NotChecked=0, Total=272 [2023-11-06 21:16:05,266 INFO L87 Difference]: Start difference. First operand 156 states and 221 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 6 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-06 21:16:05,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:05,961 INFO L93 Difference]: Finished difference Result 453 states and 646 transitions. [2023-11-06 21:16:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:16:05,962 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 6 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 112 [2023-11-06 21:16:05,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:05,964 INFO L225 Difference]: With dead ends: 453 [2023-11-06 21:16:05,964 INFO L226 Difference]: Without dead ends: 300 [2023-11-06 21:16:05,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=171, Unknown=5, NotChecked=0, Total=306 [2023-11-06 21:16:05,966 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 209 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:05,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 492 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:16:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-06 21:16:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 272. [2023-11-06 21:16:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 243 states have (on average 1.3497942386831276) internal successors, (328), 243 states have internal predecessors, (328), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-06 21:16:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 380 transitions. [2023-11-06 21:16:06,006 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 380 transitions. Word has length 112 [2023-11-06 21:16:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:06,007 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 380 transitions. [2023-11-06 21:16:06,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 6 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-06 21:16:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 380 transitions. [2023-11-06 21:16:06,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-06 21:16:06,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:06,009 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:06,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:06,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 21:16:06,216 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:06,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash -247824766, now seen corresponding path program 1 times [2023-11-06 21:16:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:06,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527468682] [2023-11-06 21:16:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:06,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:06,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:06,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630050445] [2023-11-06 21:16:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:06,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:06,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:06,252 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:06,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 21:16:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:06,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 21:16:06,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:07,434 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 21:16:07,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:07,498 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 20 treesize of output 18 [2023-11-06 21:16:07,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:07,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:07,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:07,527 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-06 21:16:07,654 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 49 treesize of output 25 [2023-11-06 21:16:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:16:07,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:07,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:07,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527468682] [2023-11-06 21:16:07,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:07,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630050445] [2023-11-06 21:16:07,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630050445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:07,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:07,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:16:07,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061755475] [2023-11-06 21:16:07,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:07,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:16:07,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:07,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:16:07,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:16:07,674 INFO L87 Difference]: Start difference. First operand 272 states and 380 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:16:08,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:08,136 INFO L93 Difference]: Finished difference Result 603 states and 835 transitions. [2023-11-06 21:16:08,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:16:08,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 113 [2023-11-06 21:16:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:08,139 INFO L225 Difference]: With dead ends: 603 [2023-11-06 21:16:08,140 INFO L226 Difference]: Without dead ends: 334 [2023-11-06 21:16:08,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:16:08,141 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 293 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:08,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 339 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:16:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-06 21:16:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 316. [2023-11-06 21:16:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 287 states have (on average 1.3414634146341464) internal successors, (385), 287 states have internal predecessors, (385), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-06 21:16:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 437 transitions. [2023-11-06 21:16:08,183 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 437 transitions. Word has length 113 [2023-11-06 21:16:08,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:08,183 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 437 transitions. [2023-11-06 21:16:08,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:16:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 437 transitions. [2023-11-06 21:16:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-06 21:16:08,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:08,185 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:08,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:08,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 21:16:08,392 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:08,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:08,392 INFO L85 PathProgramCache]: Analyzing trace with hash -249671808, now seen corresponding path program 1 times [2023-11-06 21:16:08,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:08,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377341166] [2023-11-06 21:16:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:08,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:08,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:08,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957118142] [2023-11-06 21:16:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:08,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:08,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:08,416 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:08,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-06 21:16:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:08,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-06 21:16:08,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:08,906 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 21:16:09,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:09,784 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 21:16:10,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:10,269 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 21:16:10,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:10,678 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 21:16:11,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:11,035 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 21:16:11,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:11,340 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 21:16:11,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:11,651 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 21:16:11,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:11,733 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 21:16:11,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:11,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:11,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:11,821 INFO L322 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-11-06 21:16:11,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 90 [2023-11-06 21:16:11,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2023-11-06 21:16:11,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2023-11-06 21:16:11,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:11,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:11,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 60 treesize of output 42 [2023-11-06 21:16:12,008 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 23 [2023-11-06 21:16:12,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:12,435 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 61 treesize of output 33 [2023-11-06 21:16:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 21:16:12,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:12,865 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:16:12,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:12,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377341166] [2023-11-06 21:16:12,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:12,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957118142] [2023-11-06 21:16:12,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957118142] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:12,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:12,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-11-06 21:16:12,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868395478] [2023-11-06 21:16:12,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:12,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:16:12,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:16:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2023-11-06 21:16:12,868 INFO L87 Difference]: Start difference. First operand 316 states and 437 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:16:13,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:13,795 INFO L93 Difference]: Finished difference Result 531 states and 746 transitions. [2023-11-06 21:16:13,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:16:13,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 113 [2023-11-06 21:16:13,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:13,799 INFO L225 Difference]: With dead ends: 531 [2023-11-06 21:16:13,800 INFO L226 Difference]: Without dead ends: 529 [2023-11-06 21:16:13,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 21:16:13,801 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 201 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:13,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 929 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 21:16:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-11-06 21:16:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 348. [2023-11-06 21:16:13,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 319 states have (on average 1.3448275862068966) internal successors, (429), 319 states have internal predecessors, (429), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-06 21:16:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 481 transitions. [2023-11-06 21:16:13,857 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 481 transitions. Word has length 113 [2023-11-06 21:16:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:13,857 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 481 transitions. [2023-11-06 21:16:13,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:16:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 481 transitions. [2023-11-06 21:16:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-06 21:16:13,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:13,859 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:13,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:14,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 21:16:14,067 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:14,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1527182596, now seen corresponding path program 1 times [2023-11-06 21:16:14,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:14,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614314666] [2023-11-06 21:16:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:14,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:14,091 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:14,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825164307] [2023-11-06 21:16:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:14,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:14,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:14,093 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:14,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-06 21:16:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:14,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 21:16:14,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:15,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 21:16:16,044 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 21:16:16,086 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 21:16:16,118 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 23 [2023-11-06 21:16:16,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:16,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:16,124 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 20 treesize of output 18 [2023-11-06 21:16:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-06 21:16:16,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:16,400 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1289 (Array Int Int)) (v_ArrVal_1288 (Array Int Int)) (~var_1_13_Pointer~0.offset Int)) (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1288))) (store .cse1 c_~var_1_13_Pointer~0.base (store (select .cse1 c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset (select (select .cse1 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset)))) c_~var_1_15_Pointer~0.base v_ArrVal_1289))) (= (select (select .cse0 c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset) (select (select .cse0 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset)))) is different from false [2023-11-06 21:16:16,417 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1289 (Array Int Int)) (v_ArrVal_1288 (Array Int Int)) (v_ArrVal_1287 (Array Int Int)) (~var_1_13_Pointer~0.offset Int)) (let ((.cse0 (store (let ((.cse1 (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_1287) c_~var_1_1_Pointer~0.base v_ArrVal_1288))) (store .cse1 c_~var_1_13_Pointer~0.base (store (select .cse1 c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset (select (select .cse1 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset)))) c_~var_1_15_Pointer~0.base v_ArrVal_1289))) (= (select (select .cse0 c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset) (select (select .cse0 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset)))) is different from false [2023-11-06 21:16:16,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:16,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614314666] [2023-11-06 21:16:16,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:16,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825164307] [2023-11-06 21:16:16,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825164307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:16,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:16,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-06 21:16:16,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944645247] [2023-11-06 21:16:16,448 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:16,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:16:16,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:16,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:16:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=80, Unknown=4, NotChecked=38, Total=156 [2023-11-06 21:16:16,450 INFO L87 Difference]: Start difference. First operand 348 states and 481 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 21:16:17,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:17,012 INFO L93 Difference]: Finished difference Result 712 states and 979 transitions. [2023-11-06 21:16:17,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:16:17,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 113 [2023-11-06 21:16:17,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:17,015 INFO L225 Difference]: With dead ends: 712 [2023-11-06 21:16:17,015 INFO L226 Difference]: Without dead ends: 367 [2023-11-06 21:16:17,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=119, Unknown=4, NotChecked=50, Total=240 [2023-11-06 21:16:17,017 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 526 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:17,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 343 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:16:17,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-06 21:16:17,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 348. [2023-11-06 21:16:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 319 states have (on average 1.3385579937304075) internal successors, (427), 319 states have internal predecessors, (427), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-06 21:16:17,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 479 transitions. [2023-11-06 21:16:17,070 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 479 transitions. Word has length 113 [2023-11-06 21:16:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:17,070 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 479 transitions. [2023-11-06 21:16:17,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 21:16:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 479 transitions. [2023-11-06 21:16:17,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-06 21:16:17,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:17,072 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:17,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-06 21:16:17,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-06 21:16:17,279 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:17,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:17,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2087726330, now seen corresponding path program 1 times [2023-11-06 21:16:17,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:17,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408719379] [2023-11-06 21:16:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:17,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:17,319 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:17,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912820227] [2023-11-06 21:16:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:17,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:17,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:17,323 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:17,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-06 21:16:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:17,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:16:17,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:16:17,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:17,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:17,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408719379] [2023-11-06 21:16:17,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:17,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912820227] [2023-11-06 21:16:17,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912820227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:17,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:17,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:16:17,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877519633] [2023-11-06 21:16:17,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:17,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:16:17,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:17,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:16:17,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:16:17,619 INFO L87 Difference]: Start difference. First operand 348 states and 479 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:16:17,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:17,705 INFO L93 Difference]: Finished difference Result 724 states and 994 transitions. [2023-11-06 21:16:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:16:17,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 113 [2023-11-06 21:16:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:17,708 INFO L225 Difference]: With dead ends: 724 [2023-11-06 21:16:17,708 INFO L226 Difference]: Without dead ends: 379 [2023-11-06 21:16:17,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:16:17,709 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 38 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:17,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 514 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:16:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-06 21:16:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 360. [2023-11-06 21:16:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 331 states have (on average 1.3262839879154078) internal successors, (439), 331 states have internal predecessors, (439), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-06 21:16:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 491 transitions. [2023-11-06 21:16:17,760 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 491 transitions. Word has length 113 [2023-11-06 21:16:17,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:17,761 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 491 transitions. [2023-11-06 21:16:17,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:16:17,761 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 491 transitions. [2023-11-06 21:16:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-06 21:16:17,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:17,763 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:17,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:17,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 21:16:17,969 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:17,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1650841692, now seen corresponding path program 1 times [2023-11-06 21:16:17,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:17,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982692216] [2023-11-06 21:16:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:17,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:17,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:17,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862848831] [2023-11-06 21:16:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:17,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:17,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:17,995 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:18,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-06 21:16:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:18,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:16:18,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:16:18,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:18,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:18,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982692216] [2023-11-06 21:16:18,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:18,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862848831] [2023-11-06 21:16:18,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862848831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:18,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:18,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:16:18,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309884129] [2023-11-06 21:16:18,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:18,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:16:18,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:18,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:16:18,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:16:18,330 INFO L87 Difference]: Start difference. First operand 360 states and 491 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:16:18,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:18,433 INFO L93 Difference]: Finished difference Result 890 states and 1221 transitions. [2023-11-06 21:16:18,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:16:18,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 113 [2023-11-06 21:16:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:18,437 INFO L225 Difference]: With dead ends: 890 [2023-11-06 21:16:18,437 INFO L226 Difference]: Without dead ends: 533 [2023-11-06 21:16:18,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:16:18,439 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 132 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:18,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 381 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:16:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-11-06 21:16:18,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 446. [2023-11-06 21:16:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 417 states have (on average 1.34052757793765) internal successors, (559), 417 states have internal predecessors, (559), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-06 21:16:18,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 611 transitions. [2023-11-06 21:16:18,492 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 611 transitions. Word has length 113 [2023-11-06 21:16:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:18,493 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 611 transitions. [2023-11-06 21:16:18,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:16:18,493 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 611 transitions. [2023-11-06 21:16:18,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-06 21:16:18,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:18,495 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:18,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:18,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:18,702 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:18,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:18,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1197739303, now seen corresponding path program 1 times [2023-11-06 21:16:18,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:18,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279860640] [2023-11-06 21:16:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:18,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:18,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:18,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785888270] [2023-11-06 21:16:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:18,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:18,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:18,731 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:18,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-06 21:16:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:18,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 21:16:18,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:20,482 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 21:16:20,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:20,981 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 21:16:21,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:21,309 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 21:16:21,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:21,682 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 21:16:21,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:21,748 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 18 treesize of output 13 [2023-11-06 21:16:21,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:21,824 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 21:16:21,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:21,864 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 21:16:21,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:21,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:21,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-06 21:16:21,908 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 21:16:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-06 21:16:21,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:22,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:22,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279860640] [2023-11-06 21:16:22,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785888270] [2023-11-06 21:16:22,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785888270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:22,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:22,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-06 21:16:22,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118339425] [2023-11-06 21:16:22,323 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:22,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:16:22,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:22,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:16:22,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=270, Unknown=22, NotChecked=0, Total=380 [2023-11-06 21:16:22,325 INFO L87 Difference]: Start difference. First operand 446 states and 611 transitions. Second operand has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 21:16:23,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:23,462 INFO L93 Difference]: Finished difference Result 734 states and 993 transitions. [2023-11-06 21:16:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:16:23,463 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 114 [2023-11-06 21:16:23,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:23,465 INFO L225 Difference]: With dead ends: 734 [2023-11-06 21:16:23,466 INFO L226 Difference]: Without dead ends: 291 [2023-11-06 21:16:23,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=206, Invalid=584, Unknown=22, NotChecked=0, Total=812 [2023-11-06 21:16:23,468 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 241 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:23,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 287 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:16:23,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-06 21:16:23,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 171. [2023-11-06 21:16:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 155 states have (on average 1.1935483870967742) internal successors, (185), 155 states have internal predecessors, (185), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:16:23,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 211 transitions. [2023-11-06 21:16:23,501 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 211 transitions. Word has length 114 [2023-11-06 21:16:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:23,502 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 211 transitions. [2023-11-06 21:16:23,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 21:16:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 211 transitions. [2023-11-06 21:16:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-06 21:16:23,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:23,504 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:23,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:23,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:23,710 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:23,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:23,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1257350081, now seen corresponding path program 1 times [2023-11-06 21:16:23,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:23,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93445653] [2023-11-06 21:16:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:23,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:23,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:23,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371053833] [2023-11-06 21:16:23,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:23,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:23,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:23,739 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:23,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-06 21:16:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:23,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-06 21:16:24,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:25,759 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 21:16:26,027 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 21:16:26,359 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 72 treesize of output 57 [2023-11-06 21:16:26,369 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 16 treesize of output 15 [2023-11-06 21:16:26,380 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 18 treesize of output 17 [2023-11-06 21:16:26,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:26,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:26,499 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 66 treesize of output 56 [2023-11-06 21:16:26,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:26,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:26,679 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 66 treesize of output 56 [2023-11-06 21:16:26,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:26,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:26,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:26,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:26,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 56 [2023-11-06 21:16:26,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:26,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:26,798 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 66 treesize of output 56 [2023-11-06 21:16:27,182 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:16:27,183 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 53 [2023-11-06 21:16:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-06 21:16:27,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:27,666 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse0 (mod (+ 252 (select (select .cse1 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (or (= .cse0 (select (select .cse1 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) (< 127 .cse0))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse2 (mod (+ 252 (select (select .cse4 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256)) (.cse3 (select (select .cse4 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) (or (= .cse2 .cse3) (= .cse2 (+ 256 .cse3)))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int))) (let ((.cse6 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse5 (mod (+ 252 (select (select .cse6 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (or (= .cse5 (+ 256 (select (select .cse6 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) (< .cse5 128)))))) is different from false [2023-11-06 21:16:27,725 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse0 (select (select .cse2 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) (.cse1 (mod (+ (select (select .cse2 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset) 252) 256))) (or (= .cse0 .cse1) (= (+ .cse0 256) .cse1))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse3 (mod (+ (select (select .cse4 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset) 252) 256))) (or (< .cse3 128) (= (+ (select (select .cse4 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) 256) .cse3))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int))) (let ((.cse6 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse5 (mod (+ (select (select .cse6 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset) 252) 256))) (or (< 127 .cse5) (= (select (select .cse6 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) .cse5)))))) is different from false [2023-11-06 21:16:27,843 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int))) (let ((.cse1 (store (store (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse0 (mod (+ 252 (select (select .cse1 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (or (< .cse0 128) (= (+ (select (select .cse1 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) 256) .cse0))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int))) (let ((.cse2 (store (store (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse3 (mod (+ 252 (select (select .cse2 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (or (= (select (select .cse2 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) .cse3) (< 127 .cse3))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int))) (let ((.cse6 (store (store (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse4 (select (select .cse6 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) (.cse5 (mod (+ 252 (select (select .cse6 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (or (= (+ .cse4 256) .cse5) (= .cse4 .cse5)))))) is different from false [2023-11-06 21:16:29,976 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| c_~var_1_8_Pointer~0.base)) (.cse9 (mod |c_ULTIMATE.start_step_#t~ite8#1| 256))) (and (or (let ((.cse3 (+ .cse9 (- 256)))) (and (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse1 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse2 ~var_1_8_Pointer~0.offset .cse3)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse0 (mod (+ 252 (select (select .cse1 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (or (< .cse0 128) (= .cse0 (+ (select (select .cse1 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset) 256)))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse6 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse2 ~var_1_8_Pointer~0.offset .cse3)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse4 (mod (+ 252 (select (select .cse6 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256)) (.cse5 (select (select .cse6 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset))) (or (= .cse4 .cse5) (= .cse4 (+ .cse5 256)))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse8 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse2 ~var_1_8_Pointer~0.offset .cse3)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse7 (mod (+ 252 (select (select .cse8 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (or (< 127 .cse7) (= .cse7 (select (select .cse8 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset)))))))) (< .cse9 128)) (or (and (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse10 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse2 ~var_1_8_Pointer~0.offset .cse9)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse11 (mod (+ 252 (select (select .cse10 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (or (= (+ 256 (select (select .cse10 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset)) .cse11) (< .cse11 128))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse14 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse2 ~var_1_8_Pointer~0.offset .cse9)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse13 (mod (+ 252 (select (select .cse14 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256)) (.cse12 (select (select .cse14 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset))) (or (= (+ 256 .cse12) .cse13) (= .cse13 .cse12))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse16 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse2 ~var_1_8_Pointer~0.offset .cse9)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse15 (mod (+ 252 (select (select .cse16 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (or (= .cse15 (select (select .cse16 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset)) (< 127 .cse15)))))) (< 127 .cse9)))) is different from false [2023-11-06 21:16:30,152 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| c_~var_1_8_Pointer~0.base)) (.cse0 (mod (+ 252 (select (select |c_#memory_int| c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (and (or (< .cse0 128) (let ((.cse5 (+ .cse0 (- 256)))) (and (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse3 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse4 ~var_1_8_Pointer~0.offset .cse5)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse1 (mod (+ 252 (select (select .cse3 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256)) (.cse2 (select (select .cse3 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset))) (or (= .cse1 (+ 256 .cse2)) (= .cse1 .cse2))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse7 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse4 ~var_1_8_Pointer~0.offset .cse5)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse6 (mod (+ 252 (select (select .cse7 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (or (< 127 .cse6) (= .cse6 (select (select .cse7 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset)))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse9 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse4 ~var_1_8_Pointer~0.offset .cse5)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse8 (mod (+ 252 (select (select .cse9 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)) 256))) (or (= .cse8 (+ 256 (select (select .cse9 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset))) (< .cse8 128)))))))) (or (and (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse11 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse4 ~var_1_8_Pointer~0.offset .cse0)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse10 (mod (+ (select (select .cse11 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset) 252) 256))) (or (= .cse10 (select (select .cse11 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset)) (< 127 .cse10))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse14 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse4 ~var_1_8_Pointer~0.offset .cse0)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse12 (mod (+ (select (select .cse14 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset) 252) 256)) (.cse13 (select (select .cse14 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset))) (or (= .cse12 .cse13) (= .cse12 (+ 256 .cse13)))))) (forall ((v_ArrVal_1477 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int)) (~var_1_8_Pointer~0.offset Int)) (let ((.cse16 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse4 ~var_1_8_Pointer~0.offset .cse0)) c_~var_1_14_Pointer~0.base v_ArrVal_1474) c_~var_1_1_Pointer~0.base v_ArrVal_1475) c_~var_1_13_Pointer~0.base v_ArrVal_1477) c_~var_1_15_Pointer~0.base v_ArrVal_1476))) (let ((.cse15 (mod (+ (select (select .cse16 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset) 252) 256))) (or (< .cse15 128) (= .cse15 (+ 256 (select (select .cse16 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset)))))))) (< 127 .cse0)))) is different from false [2023-11-06 21:16:30,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:30,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93445653] [2023-11-06 21:16:30,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:30,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371053833] [2023-11-06 21:16:30,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371053833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:30,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:30,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-06 21:16:30,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144353686] [2023-11-06 21:16:30,598 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:30,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:16:30,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:30,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:16:30,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=325, Unknown=5, NotChecked=200, Total=600 [2023-11-06 21:16:30,599 INFO L87 Difference]: Start difference. First operand 171 states and 211 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-06 21:16:33,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:33,541 INFO L93 Difference]: Finished difference Result 522 states and 653 transitions. [2023-11-06 21:16:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 21:16:33,542 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2023-11-06 21:16:33,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:33,544 INFO L225 Difference]: With dead ends: 522 [2023-11-06 21:16:33,544 INFO L226 Difference]: Without dead ends: 354 [2023-11-06 21:16:33,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=296, Invalid=979, Unknown=5, NotChecked=360, Total=1640 [2023-11-06 21:16:33,546 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 512 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:33,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 1089 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 978 Invalid, 4 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 21:16:33,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-06 21:16:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 215. [2023-11-06 21:16:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 199 states have internal predecessors, (238), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:16:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 264 transitions. [2023-11-06 21:16:33,599 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 264 transitions. Word has length 115 [2023-11-06 21:16:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:33,601 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 264 transitions. [2023-11-06 21:16:33,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-06 21:16:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 264 transitions. [2023-11-06 21:16:33,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-06 21:16:33,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:33,603 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:33,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:33,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:33,809 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:33,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:33,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1757753537, now seen corresponding path program 1 times [2023-11-06 21:16:33,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:33,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017017677] [2023-11-06 21:16:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:33,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:33,834 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:33,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646676071] [2023-11-06 21:16:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:33,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:33,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:33,836 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:33,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-06 21:16:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:34,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-06 21:16:34,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:36,873 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 21:16:37,355 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 21:16:37,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:37,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:37,935 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 22 treesize of output 20 [2023-11-06 21:16:37,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:37,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:37,990 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 22 treesize of output 20 [2023-11-06 21:16:38,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:38,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:38,115 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 22 treesize of output 20 [2023-11-06 21:16:38,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:38,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:38,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:38,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:38,171 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-11-06 21:16:38,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:38,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:38,186 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 22 treesize of output 20 [2023-11-06 21:16:38,352 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 28 treesize of output 12 [2023-11-06 21:16:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-06 21:16:38,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:38,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017017677] [2023-11-06 21:16:38,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:38,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646676071] [2023-11-06 21:16:38,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646676071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:38,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:38,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-06 21:16:38,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683475530] [2023-11-06 21:16:38,924 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:38,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:16:38,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:38,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:16:38,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=256, Unknown=12, NotChecked=0, Total=342 [2023-11-06 21:16:38,926 INFO L87 Difference]: Start difference. First operand 215 states and 264 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-06 21:16:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:40,129 INFO L93 Difference]: Finished difference Result 535 states and 664 transitions. [2023-11-06 21:16:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:16:40,130 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2023-11-06 21:16:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:40,132 INFO L225 Difference]: With dead ends: 535 [2023-11-06 21:16:40,132 INFO L226 Difference]: Without dead ends: 323 [2023-11-06 21:16:40,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=146, Invalid=394, Unknown=12, NotChecked=0, Total=552 [2023-11-06 21:16:40,133 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 362 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:40,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 557 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 21:16:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-06 21:16:40,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 215. [2023-11-06 21:16:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 199 states have (on average 1.1909547738693467) internal successors, (237), 199 states have internal predecessors, (237), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:16:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 263 transitions. [2023-11-06 21:16:40,176 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 263 transitions. Word has length 115 [2023-11-06 21:16:40,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:40,177 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 263 transitions. [2023-11-06 21:16:40,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-06 21:16:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 263 transitions. [2023-11-06 21:16:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-06 21:16:40,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:40,178 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:40,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:40,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-06 21:16:40,396 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:40,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:40,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1234717827, now seen corresponding path program 1 times [2023-11-06 21:16:40,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:40,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183940634] [2023-11-06 21:16:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:40,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:40,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:40,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920254656] [2023-11-06 21:16:40,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:40,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:40,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:40,443 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:40,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-06 21:16:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:40,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-06 21:16:40,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:43,849 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 21:16:44,396 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 21:16:44,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:44,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:44,972 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 22 treesize of output 20 [2023-11-06 21:16:45,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,054 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 22 treesize of output 20 [2023-11-06 21:16:45,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,175 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 22 treesize of output 20 [2023-11-06 21:16:45,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-11-06 21:16:45,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:45,243 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 22 treesize of output 20 [2023-11-06 21:16:45,383 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 28 treesize of output 12 [2023-11-06 21:16:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-06 21:16:45,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:47,484 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1581 (Array Int Int)) (v_ArrVal_1580 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_1581) c_~var_1_15_Pointer~0.base v_ArrVal_1580))) (< (+ 3 (select (select .cse0 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset)) (select (select .cse0 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)))) is different from false [2023-11-06 21:16:49,616 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1579 (Array Int Int)) (v_ArrVal_1578 (Array Int Int)) (v_ArrVal_1581 (Array Int Int)) (v_ArrVal_1580 (Array Int Int))) (let ((.cse0 (store (store (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_1578) c_~var_1_1_Pointer~0.base v_ArrVal_1579) c_~var_1_13_Pointer~0.base v_ArrVal_1581) c_~var_1_15_Pointer~0.base v_ArrVal_1580))) (< (+ (select (select .cse0 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 3) (select (select .cse0 c_~var_1_9_Pointer~0.base) c_~var_1_9_Pointer~0.offset)))) is different from false [2023-11-06 21:16:52,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:52,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183940634] [2023-11-06 21:16:52,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:52,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920254656] [2023-11-06 21:16:52,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920254656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:52,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:52,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-06 21:16:52,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831070070] [2023-11-06 21:16:52,809 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:52,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:16:52,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:52,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:16:52,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=200, Unknown=12, NotChecked=62, Total=342 [2023-11-06 21:16:52,811 INFO L87 Difference]: Start difference. First operand 215 states and 263 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-06 21:16:53,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:53,857 INFO L93 Difference]: Finished difference Result 497 states and 613 transitions. [2023-11-06 21:16:53,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:16:53,858 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2023-11-06 21:16:53,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:53,860 INFO L225 Difference]: With dead ends: 497 [2023-11-06 21:16:53,860 INFO L226 Difference]: Without dead ends: 285 [2023-11-06 21:16:53,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=126, Invalid=290, Unknown=12, NotChecked=78, Total=506 [2023-11-06 21:16:53,861 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 354 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:53,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 482 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 21:16:53,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-06 21:16:53,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 215. [2023-11-06 21:16:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 199 states have (on average 1.185929648241206) internal successors, (236), 199 states have internal predecessors, (236), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:16:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 262 transitions. [2023-11-06 21:16:53,898 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 262 transitions. Word has length 115 [2023-11-06 21:16:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:53,898 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 262 transitions. [2023-11-06 21:16:53,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-06 21:16:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 262 transitions. [2023-11-06 21:16:53,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-06 21:16:53,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:53,900 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:53,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:54,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-06 21:16:54,107 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:54,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:54,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1780385791, now seen corresponding path program 1 times [2023-11-06 21:16:54,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:54,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606458498] [2023-11-06 21:16:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:54,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:54,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:54,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090081749] [2023-11-06 21:16:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:54,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:54,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:54,138 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:54,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-06 21:16:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:54,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 21:16:54,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:56,550 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 21:16:56,949 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 64 treesize of output 49 [2023-11-06 21:16:56,958 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 16 treesize of output 15 [2023-11-06 21:16:56,973 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 14 treesize of output 13 [2023-11-06 21:16:57,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:57,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:57,065 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 58 treesize of output 48 [2023-11-06 21:16:57,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:57,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:57,280 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 58 treesize of output 48 [2023-11-06 21:16:57,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:57,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:57,362 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 58 treesize of output 48 [2023-11-06 21:16:57,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:57,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:57,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:57,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:57,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 48 [2023-11-06 21:16:57,760 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:16:57,760 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 43 [2023-11-06 21:16:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-06 21:16:57,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:58,292 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse0 (mod (select (select .cse1 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256))) (or (< .cse0 128) (= .cse0 (+ 256 (select (select .cse1 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))))))) (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse2 (mod (select (select .cse3 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256))) (or (< 127 .cse2) (= .cse2 (select (select .cse3 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)))))) (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int))) (let ((.cse6 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse4 (mod (select (select .cse6 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256)) (.cse5 (select (select .cse6 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) (or (= .cse4 (+ 256 .cse5)) (= .cse4 .cse5)))))) is different from false [2023-11-06 21:16:58,370 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int)) (v_ArrVal_1629 (Array Int Int))) (let ((.cse1 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1629) c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse0 (mod (select (select .cse1 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256))) (or (= .cse0 (select (select .cse1 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) (< 127 .cse0))))) (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int)) (v_ArrVal_1629 (Array Int Int))) (let ((.cse3 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1629) c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse2 (mod (select (select .cse3 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256))) (or (< .cse2 128) (= (+ 256 (select (select .cse3 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) .cse2))))) (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int)) (v_ArrVal_1629 (Array Int Int))) (let ((.cse6 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1629) c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse5 (mod (select (select .cse6 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256)) (.cse4 (select (select .cse6 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) (or (= (+ 256 .cse4) .cse5) (= .cse5 .cse4)))))) is different from false [2023-11-06 21:17:02,042 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| c_~var_1_8_Pointer~0.base)) (.cse9 (mod (select (select |c_#memory_int| c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256))) (and (or (let ((.cse4 (+ (- 256) .cse9))) (and (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int)) (~var_1_8_Pointer~0.offset Int) (v_ArrVal_1629 (Array Int Int)) (v_ArrVal_1628 (Array Int Int))) (let ((.cse2 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse3 ~var_1_8_Pointer~0.offset .cse4)) c_~var_1_14_Pointer~0.base v_ArrVal_1628) c_~var_1_1_Pointer~0.base v_ArrVal_1629) c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse1 (mod (select (select .cse2 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256)) (.cse0 (select (select .cse2 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset))) (or (= (+ 256 .cse0) .cse1) (= .cse1 .cse0))))) (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int)) (~var_1_8_Pointer~0.offset Int) (v_ArrVal_1629 (Array Int Int)) (v_ArrVal_1628 (Array Int Int))) (let ((.cse6 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse3 ~var_1_8_Pointer~0.offset .cse4)) c_~var_1_14_Pointer~0.base v_ArrVal_1628) c_~var_1_1_Pointer~0.base v_ArrVal_1629) c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse5 (mod (select (select .cse6 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256))) (or (< 127 .cse5) (= .cse5 (select (select .cse6 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset)))))) (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int)) (~var_1_8_Pointer~0.offset Int) (v_ArrVal_1629 (Array Int Int)) (v_ArrVal_1628 (Array Int Int))) (let ((.cse7 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse3 ~var_1_8_Pointer~0.offset .cse4)) c_~var_1_14_Pointer~0.base v_ArrVal_1628) c_~var_1_1_Pointer~0.base v_ArrVal_1629) c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse8 (mod (select (select .cse7 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256))) (or (= (+ 256 (select (select .cse7 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset)) .cse8) (< .cse8 128))))))) (< .cse9 128)) (or (and (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int)) (~var_1_8_Pointer~0.offset Int) (v_ArrVal_1629 (Array Int Int)) (v_ArrVal_1628 (Array Int Int))) (let ((.cse12 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse3 ~var_1_8_Pointer~0.offset .cse9)) c_~var_1_14_Pointer~0.base v_ArrVal_1628) c_~var_1_1_Pointer~0.base v_ArrVal_1629) c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse11 (select (select .cse12 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset)) (.cse10 (mod (select (select .cse12 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256))) (or (= .cse10 .cse11) (= (+ 256 .cse11) .cse10))))) (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int)) (~var_1_8_Pointer~0.offset Int) (v_ArrVal_1629 (Array Int Int)) (v_ArrVal_1628 (Array Int Int))) (let ((.cse14 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse3 ~var_1_8_Pointer~0.offset .cse9)) c_~var_1_14_Pointer~0.base v_ArrVal_1628) c_~var_1_1_Pointer~0.base v_ArrVal_1629) c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse13 (mod (select (select .cse14 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256))) (or (< 127 .cse13) (= .cse13 (select (select .cse14 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset)))))) (forall ((v_ArrVal_1631 (Array Int Int)) (v_ArrVal_1630 (Array Int Int)) (~var_1_8_Pointer~0.offset Int) (v_ArrVal_1629 (Array Int Int)) (v_ArrVal_1628 (Array Int Int))) (let ((.cse16 (store (store (store (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base (store .cse3 ~var_1_8_Pointer~0.offset .cse9)) c_~var_1_14_Pointer~0.base v_ArrVal_1628) c_~var_1_1_Pointer~0.base v_ArrVal_1629) c_~var_1_13_Pointer~0.base v_ArrVal_1631) c_~var_1_15_Pointer~0.base v_ArrVal_1630))) (let ((.cse15 (mod (select (select .cse16 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) 256))) (or (< .cse15 128) (= (+ 256 (select (select .cse16 c_~var_1_8_Pointer~0.base) ~var_1_8_Pointer~0.offset)) .cse15)))))) (< 127 .cse9)))) is different from false [2023-11-06 21:17:02,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:02,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606458498] [2023-11-06 21:17:02,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:17:02,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090081749] [2023-11-06 21:17:02,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090081749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:17:02,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:17:02,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-06 21:17:02,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807200093] [2023-11-06 21:17:02,507 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:17:02,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:17:02,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:02,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:17:02,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=333, Unknown=33, NotChecked=120, Total=552 [2023-11-06 21:17:02,508 INFO L87 Difference]: Start difference. First operand 215 states and 262 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 21:17:08,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:17:08,272 INFO L93 Difference]: Finished difference Result 529 states and 653 transitions. [2023-11-06 21:17:08,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 21:17:08,273 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2023-11-06 21:17:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:17:08,275 INFO L225 Difference]: With dead ends: 529 [2023-11-06 21:17:08,275 INFO L226 Difference]: Without dead ends: 317 [2023-11-06 21:17:08,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=253, Invalid=902, Unknown=47, NotChecked=204, Total=1406 [2023-11-06 21:17:08,276 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 544 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 12 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:17:08,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1067 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 937 Invalid, 4 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 21:17:08,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-06 21:17:08,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 209. [2023-11-06 21:17:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 193 states have (on average 1.1865284974093264) internal successors, (229), 193 states have internal predecessors, (229), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:17:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 255 transitions. [2023-11-06 21:17:08,315 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 255 transitions. Word has length 115 [2023-11-06 21:17:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:17:08,316 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 255 transitions. [2023-11-06 21:17:08,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 21:17:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 255 transitions. [2023-11-06 21:17:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 21:17:08,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:17:08,317 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:17:08,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-06 21:17:08,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:08,525 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:17:08,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:17:08,526 INFO L85 PathProgramCache]: Analyzing trace with hash 789123591, now seen corresponding path program 1 times [2023-11-06 21:17:08,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:17:08,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248643919] [2023-11-06 21:17:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:08,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:08,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:17:08,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488789219] [2023-11-06 21:17:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:08,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:08,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:17:08,553 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:17:08,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-06 21:17:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:08,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:17:08,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:17:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:17:08,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:17:08,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:08,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248643919] [2023-11-06 21:17:08,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:17:08,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488789219] [2023-11-06 21:17:08,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488789219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:17:08,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:17:08,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:17:08,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422999427] [2023-11-06 21:17:08,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:17:08,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:17:08,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:08,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:17:08,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:17:08,869 INFO L87 Difference]: Start difference. First operand 209 states and 255 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:17:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:17:08,984 INFO L93 Difference]: Finished difference Result 429 states and 522 transitions. [2023-11-06 21:17:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:17:08,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 116 [2023-11-06 21:17:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:17:08,986 INFO L225 Difference]: With dead ends: 429 [2023-11-06 21:17:08,987 INFO L226 Difference]: Without dead ends: 223 [2023-11-06 21:17:08,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:17:08,988 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 43 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:17:08,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 567 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:17:08,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-11-06 21:17:09,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 210. [2023-11-06 21:17:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 194 states have (on average 1.1855670103092784) internal successors, (230), 194 states have internal predecessors, (230), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:17:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 256 transitions. [2023-11-06 21:17:09,026 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 256 transitions. Word has length 116 [2023-11-06 21:17:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:17:09,027 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 256 transitions. [2023-11-06 21:17:09,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:17:09,027 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 256 transitions. [2023-11-06 21:17:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 21:17:09,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:17:09,028 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:17:09,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-06 21:17:09,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-06 21:17:09,235 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:17:09,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:17:09,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1774477534, now seen corresponding path program 1 times [2023-11-06 21:17:09,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:17:09,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960015038] [2023-11-06 21:17:09,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:09,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:09,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:17:09,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009276080] [2023-11-06 21:17:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:09,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:09,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:17:09,262 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:17:09,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-06 21:17:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:09,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-06 21:17:09,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:17:11,306 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 21:17:11,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:11,913 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 21:17:12,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:12,314 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 21:17:12,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:12,714 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 21:17:12,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:12,817 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 21:17:12,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:12,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:12,872 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-06 21:17:12,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:12,883 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 18 treesize of output 13 [2023-11-06 21:17:13,022 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 21:17:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-06 21:17:13,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:17:13,312 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1718 (Array Int Int)) (v_ArrVal_1717 (Array Int Int)) (v_ArrVal_1716 (Array Int Int)) (v_ArrVal_1715 (Array Int Int))) (= (mod (select (select (store (store (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_1715) c_~var_1_1_Pointer~0.base v_ArrVal_1716) c_~var_1_13_Pointer~0.base v_ArrVal_1718) c_~var_1_15_Pointer~0.base v_ArrVal_1717) c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)) is different from false [2023-11-06 21:17:13,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:13,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960015038] [2023-11-06 21:17:13,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:17:13,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009276080] [2023-11-06 21:17:13,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009276080] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:17:13,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:17:13,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-06 21:17:13,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941086185] [2023-11-06 21:17:13,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:17:13,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 21:17:13,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 21:17:13,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=193, Unknown=15, NotChecked=30, Total=306 [2023-11-06 21:17:13,337 INFO L87 Difference]: Start difference. First operand 210 states and 256 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 11 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 21:17:14,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:17:14,852 INFO L93 Difference]: Finished difference Result 456 states and 552 transitions. [2023-11-06 21:17:14,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:17:14,852 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 11 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 118 [2023-11-06 21:17:14,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:17:14,854 INFO L225 Difference]: With dead ends: 456 [2023-11-06 21:17:14,854 INFO L226 Difference]: Without dead ends: 249 [2023-11-06 21:17:14,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=177, Invalid=511, Unknown=18, NotChecked=50, Total=756 [2023-11-06 21:17:14,856 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 250 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:17:14,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 416 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 21:17:14,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-06 21:17:14,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 216. [2023-11-06 21:17:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 200 states have (on average 1.185) internal successors, (237), 200 states have internal predecessors, (237), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:17:14,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 263 transitions. [2023-11-06 21:17:14,893 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 263 transitions. Word has length 118 [2023-11-06 21:17:14,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:17:14,894 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 263 transitions. [2023-11-06 21:17:14,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 11 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 21:17:14,894 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 263 transitions. [2023-11-06 21:17:14,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 21:17:14,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:17:14,896 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:17:14,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-11-06 21:17:15,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-06 21:17:15,104 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:17:15,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:17:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash -876145817, now seen corresponding path program 1 times [2023-11-06 21:17:15,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:17:15,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923124835] [2023-11-06 21:17:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:15,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:15,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:17:15,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663982093] [2023-11-06 21:17:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:15,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:15,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:17:15,130 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:17:15,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-06 21:17:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:15,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:17:15,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:17:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 21:17:15,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:17:15,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:15,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923124835] [2023-11-06 21:17:15,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:17:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663982093] [2023-11-06 21:17:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663982093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:17:15,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:17:15,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:17:15,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298594796] [2023-11-06 21:17:15,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:17:15,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:17:15,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:17:15,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:17:15,525 INFO L87 Difference]: Start difference. First operand 216 states and 263 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:17:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:17:15,617 INFO L93 Difference]: Finished difference Result 443 states and 537 transitions. [2023-11-06 21:17:15,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:17:15,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 120 [2023-11-06 21:17:15,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:17:15,620 INFO L225 Difference]: With dead ends: 443 [2023-11-06 21:17:15,620 INFO L226 Difference]: Without dead ends: 230 [2023-11-06 21:17:15,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:17:15,626 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 77 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:17:15,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 381 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:17:15,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-06 21:17:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 216. [2023-11-06 21:17:15,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 200 states have (on average 1.175) internal successors, (235), 200 states have internal predecessors, (235), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 21:17:15,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 261 transitions. [2023-11-06 21:17:15,664 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 261 transitions. Word has length 120 [2023-11-06 21:17:15,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:17:15,664 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 261 transitions. [2023-11-06 21:17:15,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 21:17:15,664 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 261 transitions. [2023-11-06 21:17:15,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-06 21:17:15,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:17:15,666 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:17:15,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-11-06 21:17:15,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-06 21:17:15,873 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:17:15,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:17:15,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1051333086, now seen corresponding path program 1 times [2023-11-06 21:17:15,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:17:15,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569865886] [2023-11-06 21:17:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:15,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:17:15,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872679667] [2023-11-06 21:17:15,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:15,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:15,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:17:15,911 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:17:15,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-06 21:17:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:16,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 21:17:16,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:17:17,971 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 21:17:18,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:18,633 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 21:17:19,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:19,065 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 18 treesize of output 13 [2023-11-06 21:17:19,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:19,582 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 21:17:19,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:19,648 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 21:17:19,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:19,751 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 21:17:19,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:19,805 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 21:17:19,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:19,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:19,821 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-06 21:17:19,961 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 21:17:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-06 21:17:19,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:17:20,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:20,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569865886] [2023-11-06 21:17:20,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:17:20,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872679667] [2023-11-06 21:17:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872679667] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:17:20,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:17:20,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-06 21:17:20,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241378940] [2023-11-06 21:17:20,656 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:17:20,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:17:20,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:20,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:17:20,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=278, Unknown=14, NotChecked=0, Total=380 [2023-11-06 21:17:20,658 INFO L87 Difference]: Start difference. First operand 216 states and 261 transitions. Second operand has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 21:17:21,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:17:21,839 INFO L93 Difference]: Finished difference Result 416 states and 498 transitions. [2023-11-06 21:17:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:17:21,840 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2023-11-06 21:17:21,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:17:21,840 INFO L225 Difference]: With dead ends: 416 [2023-11-06 21:17:21,840 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 21:17:21,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=206, Invalid=591, Unknown=15, NotChecked=0, Total=812 [2023-11-06 21:17:21,841 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 287 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:17:21,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 230 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:17:21,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 21:17:21,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 21:17:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:17:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:17:21,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2023-11-06 21:17:21,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:17:21,843 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:17:21,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-06 21:17:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:17:21,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 21:17:21,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 21:17:21,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-06 21:17:22,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a89dd-d42d-4c4f-8c21-86edd0ce941f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-06 21:17:22,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.